Experimental Verification of The Laws of Reflection

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  • เผยแพร่เมื่อ 30 ต.ค. 2024

ความคิดเห็น • 222

  • @Jaheemjb
    @Jaheemjb 2 ปีที่แล้ว +40

    Bruh you taught me more than my physics teacher did in a 2hour session , thank you

    • @science_sir
      @science_sir  2 ปีที่แล้ว +3

      You're welcome 🙏

  • @junkaiwoo9349
    @junkaiwoo9349 4 ปีที่แล้ว +34

    Lmao this is just amazing just these 6 minutes can teach me how to do the practical and 1 hour from my tchr cant achieve the same result. Thanks so much

    • @science_sir
      @science_sir  4 ปีที่แล้ว +3

      Thank you so much for all your kind words of appreciation. It really means a lot to me. God bless you and your family 🙏

    • @shree1396
      @shree1396 3 ปีที่แล้ว

      Its 7mins - 9 secs actually.........

    • @punitsahuji9729
      @punitsahuji9729 2 ปีที่แล้ว +1

      Jaiswal bro I think in world time moves faster 😂😂

  • @nafisaparveen4275
    @nafisaparveen4275 4 ปีที่แล้ว +12

    Thank u sir...u cleared my concept,visual understanding really helps more than books.

  • @gavyasonkar594
    @gavyasonkar594 3 ปีที่แล้ว +4

    Thank you very much for such a simple and easy to understand explanation this topic was in our book but and it was taught in an online class as well but I did not understand it well from there so I searched that topic here and found such a nice explanation from here it was very easy to understand this visually ☺☺☺☺

    • @science_sir
      @science_sir  3 ปีที่แล้ว +1

      You're welcome 🙏

  • @lilchicbear5773
    @lilchicbear5773 5 ปีที่แล้ว +9

    Thanks ....for such a good explanation.......:-)
    We had written this only as an answer and couldn't understand it at first......
    But now m so happy to understand it so nicely.......
    I think I'll score good marks in the topic

    • @science_sir
      @science_sir  5 ปีที่แล้ว +1

      Thank you so much for all your appreciations. Wishing you all the best. Regards

  • @hindvi5985
    @hindvi5985 2 ปีที่แล้ว

    It's my practical exam tomorrow...nd only bcz of u I have understood everything 🙌

    • @science_sir
      @science_sir  2 ปีที่แล้ว

      You're welcome. God bless 🙏

    • @hindvi5985
      @hindvi5985 2 ปีที่แล้ว +2

      🤗

  • @sarutimilsina4453
    @sarutimilsina4453 ปีที่แล้ว +1

    Thank u so much sir.Now I understand clearly🤗

    • @science_sir
      @science_sir  ปีที่แล้ว

      You're welcome. God bless 🙏

  • @Gamer-uc2yw
    @Gamer-uc2yw 3 ปีที่แล้ว +5

    Amazing work, just keep It up, helpful for students 💖

  • @manu_0786
    @manu_0786 2 ปีที่แล้ว +2

    Thank you 😊☺️
    It's eating my brain you solved it 😃👌

    • @science_sir
      @science_sir  2 ปีที่แล้ว

      You're welcome. God bless 🙏

  • @ayushpratapsingh7709
    @ayushpratapsingh7709 5 ปีที่แล้ว +8

    Thank you so much Sir I learned it in just 5 mins and I was unable to do that in 40min in class.... Thank you so much #sir🙏🙏

    • @science_sir
      @science_sir  5 ปีที่แล้ว +1

      Ur most welcome & thank you so much for all your appreciations. Regards

    • @ayushpratapsingh7709
      @ayushpratapsingh7709 5 ปีที่แล้ว +1

      No problem sir I salute your work just I want that you explain by your voice then by writinh on the screen. It will become easy for us to learn and understand quickly.. Please if you can do that will be a great pleasure..👍 hope you like my advice and sorry if you felt wrong 🙏🙏👍👍 I still really love your videos .. 😍😍😄💝

    • @science_sir
      @science_sir  5 ปีที่แล้ว +1

      Thank you so much for your feedback. I will definitely try to rectify this in my upcoming videos. Please forgive me for all the inconvenience caused. Best regards

    • @ayushpratapsingh7709
      @ayushpratapsingh7709 5 ปีที่แล้ว +1

      U r welcome sir. Good luck and make more and more new videos👍👍💝

  • @Yeblodg
    @Yeblodg 6 ปีที่แล้ว +1

    best explanation available on internet

    • @science_sir
      @science_sir  6 ปีที่แล้ว

      +They Call Me Juggernaut thanks

  • @MandeepKaur-go8lu
    @MandeepKaur-go8lu 3 ปีที่แล้ว +2

    Tkhuuuuuuuuuu sir for this wonderful explaintion.I think that now I can score best marks. .👌🙏👍👍😊😊😊

    • @MandeepKaur-go8lu
      @MandeepKaur-go8lu 3 ปีที่แล้ว +2

      Tkhuuuuuuuuuu sir

    • @science_sir
      @science_sir  3 ปีที่แล้ว +1

      You're extremely welcome Mr. Kaur and thank you so much for all your kind words of appreciation. Wishing you all the best. God bless you and your family 🙏

  • @Rush-rk6vv
    @Rush-rk6vv 2 ปีที่แล้ว +1

    thank you very much. It helped me a lot.

    • @science_sir
      @science_sir  2 ปีที่แล้ว

      You're welcome. God bless 🙏

  • @jannatmani5250
    @jannatmani5250 3 ปีที่แล้ว +1

    Its superbb👍👍

    • @science_sir
      @science_sir  3 ปีที่แล้ว +1

      Thank you so much for your appreciation. It means a lot to me. God bless 🙏

  • @maimoongagguturi2289
    @maimoongagguturi2289 6 ปีที่แล้ว +6

    Awesome explanation!
    Thank you, sir

    • @science_sir
      @science_sir  6 ปีที่แล้ว

      Ur most welcome & thank you so much for your appreciation. Regards

    • @girijanarayan2386
      @girijanarayan2386 4 ปีที่แล้ว

      Do you hear him speaking

  • @Shruthi.shashidhar
    @Shruthi.shashidhar 2 ปีที่แล้ว +2

    this was there in my textbook, I couldn't really understand that, now it's so easy lol, thank you sir

    • @science_sir
      @science_sir  2 ปีที่แล้ว

      You're welcome
      God bless 🙏

  • @dipakroy2735
    @dipakroy2735 6 ปีที่แล้ว

    Thanks for providing this video for my daughter.Now she can complete her

    • @science_sir
      @science_sir  6 ปีที่แล้ว

      +Dipak Roy ur most welcome

  • @zaidmansuri4470
    @zaidmansuri4470 5 ปีที่แล้ว

    mere pass koi words nahi bache aapko thank you bolne ke ye video mere practical ke like bohot helpful tha

    • @science_sir
      @science_sir  5 ปีที่แล้ว

      Thank you so much for all your appreciations. Regards

  • @arghyadeepmaity6731
    @arghyadeepmaity6731 6 ปีที่แล้ว +10

    Awesome video!!! Thank you so much, Sir!!! ❤❤❤

    • @science_sir
      @science_sir  6 ปีที่แล้ว

      +Arghyadeep Maity ur most welcome

  • @bakamamoon2082
    @bakamamoon2082 3 ปีที่แล้ว

    i had to make a 3d model science experiment or a chart and i wanted to do experiment because everyone is willing to make a 3d model this is easy and simple thank you sir hope i get 10/10

  • @firozshaikh6199
    @firozshaikh6199 7 ปีที่แล้ว +3

    thankyou to the person who made this video it will really help me in the school thanks 👍👍👍👍

  • @saniakhatun788
    @saniakhatun788 4 ปีที่แล้ว +1

    It is really very very helpful

    • @science_sir
      @science_sir  4 ปีที่แล้ว

      Thank you so much Firoja for all your appreciation. It means a lot. God bless 🙏

  • @tanviprincess4175
    @tanviprincess4175 7 ปีที่แล้ว +6

    Wow!!! Amazing video! Really helpful! Thank you so much. Actually I didn't do the experiment at school and hence when my tutor was explaining, I was not being able to understand and thanks to you I've understood now!!! THANK YOU!!! But when we are looking at the pins on the mirror, why can't we look at the pin's head instead of the pin's bottom?

    • @science_sir
      @science_sir  7 ปีที่แล้ว +3

      If the pins are placed perfectly vertical with the base, then you can definitely take the reading by looking at any point of the pins but sometimes while placing the pins on the board, the pins gets tilted, in that case to eliminate the errors we should always take the reading by looking at the pin's bottom.

    • @tanviprincess4175
      @tanviprincess4175 7 ปีที่แล้ว +1

      Science Sir
      Thank you so much!

    • @science_sir
      @science_sir  7 ปีที่แล้ว

      UR most welcome

  • @poojasartcollection9546
    @poojasartcollection9546 3 ปีที่แล้ว +1

    Sir your video was b
    Very helpful for us but....please give some sound to your video

  • @panjalasrinivas5721
    @panjalasrinivas5721 3 ปีที่แล้ว +1

    Video was simply superb but add any music to this video

  • @noahsan5221
    @noahsan5221 4 ปีที่แล้ว +3

    Thank you so much Sir! It's very useful for my upcoming exam 😊 I didn't understand it in the class .. but I understood here 😉

    • @science_sir
      @science_sir  4 ปีที่แล้ว +2

      Thank you so much for all your appreciation. It really means a lot to. Wishing you all the best for your exam. God bless 🙏

  • @iPlayGames4U407
    @iPlayGames4U407 3 ปีที่แล้ว +2

    Noice

  • @mulundbuntssangha1365
    @mulundbuntssangha1365 7 ปีที่แล้ว +12

    Thank you i will able score good marks in physics

    • @science_sir
      @science_sir  7 ปีที่แล้ว

      Shetty Shashikanthi ur most welcome

  • @mikey002
    @mikey002 4 ปีที่แล้ว +2

    I never understood this experiment until now. Thanks

    • @science_sir
      @science_sir  4 ปีที่แล้ว +1

      Thank you so much Mr. Mike for your kind words of appreciation, it means a lot to me. God bless you and your family 🙏

    • @alexander-theprogamer6529
      @alexander-theprogamer6529 3 ปีที่แล้ว

      @@science_sir sir uor vs has no sounds

  • @hajar.h6207
    @hajar.h6207 4 ปีที่แล้ว +3

    Thank you so much

    • @science_sir
      @science_sir  4 ปีที่แล้ว +1

      You're extremely welcome and Thank you so much for all your kind words of appreciation. It really means a lot to me. God bless you and your family 🙏

  • @Vikalp_lifts
    @Vikalp_lifts 6 ปีที่แล้ว +4

    Thank u.this is exactly what I needed

    • @science_sir
      @science_sir  6 ปีที่แล้ว

      Ur most welcome & thank you so much for your appreciation. Regards

  • @dianarini3523
    @dianarini3523 3 ปีที่แล้ว +1

    Thank you very much...

  • @muhammadusmanrizwan7886
    @muhammadusmanrizwan7886 3 ปีที่แล้ว +1

    Very helpful😘

  • @jcgaming3856
    @jcgaming3856 3 ปีที่แล้ว +2

    good sir

  • @prashantsrivastav3257
    @prashantsrivastav3257 3 ปีที่แล้ว +1

    Great work sir 👌

    • @science_sir
      @science_sir  3 ปีที่แล้ว

      Thank you so much for your appreciation. It means a lot. God bless 🙏

  • @harkiratkathuria318
    @harkiratkathuria318 ปีที่แล้ว

    Thank you!

  • @omprakashdubey20061
    @omprakashdubey20061 6 ปีที่แล้ว +5

    Excellent explanation

    • @science_sir
      @science_sir  6 ปีที่แล้ว

      +Prakash Sir's Pvt. Grp Tuitions thanks for your appreciation. Regards

  • @musiciseverythingarmy5256
    @musiciseverythingarmy5256 6 ปีที่แล้ว +7

    Thnx a lot .....now I can score good 😊

    • @science_sir
      @science_sir  6 ปีที่แล้ว +2

      +Bts die heart fan #Army sure u can and ur most welcome. Regards

  • @sitchblut3755
    @sitchblut3755 4 ปีที่แล้ว +3

    is this just me or there is actually no sound in the videoo??

    • @Jennifer715-j8s
      @Jennifer715-j8s หลายเดือนก่อน

      No there is not at all sound

  • @bushranizami1323
    @bushranizami1323 3 ปีที่แล้ว

    Zaberdast

  • @cynthiavanessa32
    @cynthiavanessa32 5 ปีที่แล้ว

    Please which précautions should we take

  • @shivaprakasht676
    @shivaprakasht676 5 ปีที่แล้ว +2

    Very simple experiment and easy to conduct

  • @AksTrisha
    @AksTrisha 5 ปีที่แล้ว

    Thanks a LOT Sir !!!!! It really helped me a lot !!!

    • @science_sir
      @science_sir  5 ปีที่แล้ว +1

      Thank you so much for your appreciation. Regards

  • @saeedahmed5902
    @saeedahmed5902 2 ปีที่แล้ว

    Wow! great sir 💖

  • @ramusaladi166
    @ramusaladi166 3 ปีที่แล้ว +1

    Thank you so much sir . I clarified my doubt

    • @science_sir
      @science_sir  3 ปีที่แล้ว

      You're extremely welcome and Thank you so much for all your kind words of appreciation. It really means a lot to me. God bless you and your family 🙏

  • @shyam.yadav12
    @shyam.yadav12 2 ปีที่แล้ว +1

    My physics teacher recommended this 😅

    • @science_sir
      @science_sir  2 ปีที่แล้ว

      Say a heartily thanks to your teacher. God bless 🙏

  • @samikshyabajgain9551
    @samikshyabajgain9551 5 ปีที่แล้ว

    Thanks for such good explanation I scored good marks

    • @science_sir
      @science_sir  5 ปีที่แล้ว

      Ur most welcome & thank you so much for your appreciation. Regards

  • @devanshartsandcraftz6165
    @devanshartsandcraftz6165 2 ปีที่แล้ว +1

    Thanks a lot sir

  • @victoriabwalyaminganja396
    @victoriabwalyaminganja396 5 ปีที่แล้ว +2

    Writing my final practical exam today 😊

    • @science_sir
      @science_sir  5 ปีที่แล้ว +1

      Wishing you all the best

  • @mohdqasim9875
    @mohdqasim9875 2 ปีที่แล้ว

    Sir yeh wali boll pins kaha milti h Lucknow mai

  • @mrnobody5966
    @mrnobody5966 5 ปีที่แล้ว +1

    Thanks a lot sir... helped me a lot.
    - hope that u will be again with such videos

    • @science_sir
      @science_sir  5 ปีที่แล้ว +1

      Thank you so much for all your appreciation. It really means a lot. I will definitely try my best :)

  • @banumathiranabahadur9071
    @banumathiranabahadur9071 4 ปีที่แล้ว +1

    Wonderful video! Thanks!!

    • @science_sir
      @science_sir  4 ปีที่แล้ว +1

      Thank you so much for all your kind words of appreciation. It really means a lot to me. God bless you and your family 🙏

  • @ajitshinde2057
    @ajitshinde2057 4 ปีที่แล้ว +1

    These is my school project

  • @mubashiraaftab1044
    @mubashiraaftab1044 2 ปีที่แล้ว

    So the angle of incidence is 30° and not 60°

  • @lopamudraganguly7844
    @lopamudraganguly7844 5 ปีที่แล้ว +1

    Thank you sir for this wonderful explanation and demonstration.

    • @science_sir
      @science_sir  5 ปีที่แล้ว +1

      You're welcome and thanks for all your appreciations. Best regards

  • @soumichakraborty2580
    @soumichakraborty2580 2 ปีที่แล้ว

    i think the angle is 30° instead of 60°

  • @pihu1622
    @pihu1622 2 ปีที่แล้ว +1

    Bruh you literally taught me that thing in 6 mins and my teacher took 2 hrs still I was confused yk class 9 peeps here

    • @science_sir
      @science_sir  2 ปีที่แล้ว

      You're welcome and thank you so much for your appreciation. It means a lot. God bless.

  • @hawaalaina
    @hawaalaina 7 ปีที่แล้ว +3

    wooow..very nice sir

  • @thandikichona5336
    @thandikichona5336 4 ปีที่แล้ว +1

    Beautiful

    • @science_sir
      @science_sir  4 ปีที่แล้ว

      Thank you so much for your appreciation. It really means a lot to me. God bless 🙏

  • @sharvarideo925
    @sharvarideo925 3 ปีที่แล้ว

    What is the angle i, angle r, sin i, sin r, and sin i\sin r?

  • @deadxrusher7866
    @deadxrusher7866 4 ปีที่แล้ว +1

    It would be more good if voice was there🤔🤔🤔

    • @science_sir
      @science_sir  4 ปีที่แล้ว

      Please forgive me Nitu for the inconvenience, I wrote all possible details required for this experiment so thought to keep myself quite, maybe it's better if I talk.
      Sorry again for all the inconvenience. God bless you and your family 🙏

  • @hammy.9806
    @hammy.9806 2 ปีที่แล้ว

    I have my physics atp in 2 hours... and I'm learning this rn😀🔫

  • @mukeshagarwal8924
    @mukeshagarwal8924 4 ปีที่แล้ว +1

    This video is very good but if they would speak nd make us understand

  • @dangerbhai7853
    @dangerbhai7853 2 ปีที่แล้ว

    Thank u very much sir .

  • @mujeebshaikh4030
    @mujeebshaikh4030 5 ปีที่แล้ว

    very very very very very very thank you sir thise experiment is very well my time is very so much

    • @science_sir
      @science_sir  5 ปีที่แล้ว

      Thank you so much for all your appreciations. Regards

  • @fakestonefield
    @fakestonefield 4 ปีที่แล้ว +2

    Well done sir i understood 👍

    • @science_sir
      @science_sir  4 ปีที่แล้ว +1

      Thank you so muchl for all your kind words of appreciation. It really means a lot to me. God bless you and your family 🙏

    • @fakestonefield
      @fakestonefield 4 ปีที่แล้ว +2

      @@science_sir thank u so much sir

    • @fakestonefield
      @fakestonefield 4 ปีที่แล้ว +2

      @@science_sir 👍

    • @science_sir
      @science_sir  4 ปีที่แล้ว +1

      You're extremely welcome. God bless 🙏

  • @theheavyisdead5000
    @theheavyisdead5000 4 ปีที่แล้ว +1

    yo m8 science sir theres no volume lmfao is this normal?

  • @KIRANDEVI-vq1dd
    @KIRANDEVI-vq1dd 19 วันที่ผ่านมา

    Bro , just bcoz i understand I like the video 😊🫸🫷

  • @trinitygaming7269
    @trinitygaming7269 ปีที่แล้ว

    great but caan we do the last step first and place the pins **for an easy practical in school**

  • @khurinchir1111
    @khurinchir1111 6 ปีที่แล้ว +3

    Thx a lot

    • @science_sir
      @science_sir  6 ปีที่แล้ว

      Ur most welcome & thank you so much for your appreciation. Regards

  • @armandeepkaur2213
    @armandeepkaur2213 5 ปีที่แล้ว

    Thank u so much sir
    Now I will be able to perform this experiment in my school 😊☺️

    • @science_sir
      @science_sir  5 ปีที่แล้ว

      Thank you so much for your appreciation. All the best. Regards

  • @sumitjindal8786
    @sumitjindal8786 4 ปีที่แล้ว

    Thanks

  • @anjalijoshi2968
    @anjalijoshi2968 3 ปีที่แล้ว

    Angle taken is 30 degree n written is 60 degree.. I know it is by mistake

  • @girijanarayan2386
    @girijanarayan2386 4 ปีที่แล้ว +1

    Is this sir speaking something .?!! I can see only his actions in the entire video. Anybody There to help me. Plz. I wanna know it, and learn just like others🤐😫😪

    • @science_sir
      @science_sir  4 ปีที่แล้ว +1

      Please forgive me, I wrote all possible reasoning required for this video so thought to keep myself quite. Please feel free if you have any queries regarding the explanation. God bless you and your family 🙏

  • @Xddddddd58
    @Xddddddd58 6 ปีที่แล้ว +2

    Thnks a lot sir

    • @science_sir
      @science_sir  6 ปีที่แล้ว

      Ur most welcome & thank you so much for your appreciation. Regards

  • @inderaulakh9452
    @inderaulakh9452 5 ปีที่แล้ว +1

    Thnx sir...🙇

    • @science_sir
      @science_sir  5 ปีที่แล้ว +1

      Ur most welcome and thanks for your appreciation. Regards

    • @inderaulakh9452
      @inderaulakh9452 5 ปีที่แล้ว +2

      😊😊ur pleasure Sir. .....

  • @shiz2086
    @shiz2086 3 ปีที่แล้ว +1

    Thanks 🙃

  • @zawarhissain7505
    @zawarhissain7505 3 ปีที่แล้ว

    There should be a sound with the video.

  • @pravatadhikari4145
    @pravatadhikari4145 6 ปีที่แล้ว

    Thanks a lot new teacher!! really helped me,😃

    • @science_sir
      @science_sir  6 ปีที่แล้ว +1

      Thank you so much for your appreciation. Regards

  • @jovankaregal2435
    @jovankaregal2435 4 ปีที่แล้ว +1

    there is no voice yup?

  • @jameslaltluangpuia7694
    @jameslaltluangpuia7694 5 ปีที่แล้ว

    Thanks to you sir I will get more marks in -history- -Maths- -Biology- physics
    Read more

    • @science_sir
      @science_sir  5 ปีที่แล้ว

      Ur most welcome & thank you so much for your appreciation. Regards

  • @shobancreativestudio9177
    @shobancreativestudio9177 3 ปีที่แล้ว

    Super

  • @varshamavadiya8342
    @varshamavadiya8342 4 ปีที่แล้ว +1

    Got the same experiment in the practical.🤩🤩

  • @varsharaut7021
    @varsharaut7021 5 ปีที่แล้ว

    Nice explaination

    • @science_sir
      @science_sir  5 ปีที่แล้ว

      Thank you so much for your appreciation. Regards

  • @saritagulati7149
    @saritagulati7149 6 ปีที่แล้ว

    Good efforts sir and thank you so much.....

    • @science_sir
      @science_sir  6 ปีที่แล้ว

      Ur most welcome & thank you so much for your appreciation. Regards

  • @indrajitmukherjee366
    @indrajitmukherjee366 6 ปีที่แล้ว

    It is so helpful sir

    • @science_sir
      @science_sir  6 ปีที่แล้ว

      +Indrajit Mukherjee thanks

  • @priyabaila2049
    @priyabaila2049 5 ปีที่แล้ว

    great video

    • @science_sir
      @science_sir  5 ปีที่แล้ว

      Thank you so much for your appreciation. Regards

  • @RajeshKumar-nt9oj
    @RajeshKumar-nt9oj 5 ปีที่แล้ว

    Excellent

    • @science_sir
      @science_sir  5 ปีที่แล้ว

      Thank you so much for your appreciation. Regards

  • @reshmaamjad6047
    @reshmaamjad6047 6 ปีที่แล้ว

    very nice video😊☺👍

    • @science_sir
      @science_sir  6 ปีที่แล้ว

      Thank you so much for your appreciation. Regards

  • @pratimadas3564
    @pratimadas3564 5 ปีที่แล้ว

    Woww now i understand this topic

    • @science_sir
      @science_sir  5 ปีที่แล้ว

      Thank you so much for all your appreciations. Regards

  • @pranitashakya2702
    @pranitashakya2702 6 ปีที่แล้ว +1

    Sound plz!!

  • @krishalbhattarai5843
    @krishalbhattarai5843 6 ปีที่แล้ว

    wah science sir

    • @science_sir
      @science_sir  6 ปีที่แล้ว

      Thank you so much for your appreciation. Regards

  • @Tshetedorji1974
    @Tshetedorji1974 3 ปีที่แล้ว

    Very nice but no sound

  • @rajeshmakadia1860
    @rajeshmakadia1860 4 ปีที่แล้ว +3

    I was ready to perform my practical test in school 😜😜

  • @sabinathapa8409
    @sabinathapa8409 6 ปีที่แล้ว

    thank you teacher

    • @science_sir
      @science_sir  6 ปีที่แล้ว

      Ur most welcome & thanks for your appreciation. Regards

  • @techinteractive
    @techinteractive 6 ปีที่แล้ว

    Thanks a lot for the experiment it was really helpful

    • @science_sir
      @science_sir  6 ปีที่แล้ว

      +pro gaming channel ur most welcome

  • @shalinisneha2684
    @shalinisneha2684 4 ปีที่แล้ว

    I can't understand pls anyone explain

  • @sargunkaur5765
    @sargunkaur5765 4 ปีที่แล้ว +1

    New subscriber here😊😊

  • @tanushree3461
    @tanushree3461 5 ปีที่แล้ว

    Thank u so much

    • @science_sir
      @science_sir  5 ปีที่แล้ว

      Thank you so much for your appreciation. Regards

  • @janvi6557
    @janvi6557 6 ปีที่แล้ว

    thanku very much

    • @science_sir
      @science_sir  6 ปีที่แล้ว

      Thank you so much for your appreciation. Regards