16. What is the loudness of sound? What factors does it depend on? Solution: Loud sounds have high energy. Loudness directly depends on the amplitude of vibrations. It is proportional to the square of the amplitude of vibrations of sound. 17. Explain how bats use ultrasound to catch prey. Solution: Bats have the ability to produce high-pitched ultrasonic squeaks. These squeaks get reflected by objects, like prey, and return to their ears. This helps a bat to know how far its prey is. 18. How is ultrasound used for cleaning? Solution: Objects that need to be cleansed are put in a cleaning solution, and ultrasonic sound waves are passed through the solution. The high frequency of ultrasound waves helps in detaching the dirt from the objects. In this way, ultrasound is used for cleaning purposes. 19. Explain the working and application of a sonar. Solution: SONAR is an abbreviation for Sound Navigation and Ranging. It is an acoustic device used in measuring the direction, speed, and depth of underwater objects, such as shipwrecks and submarines, using ultrasound. Also, it is used to determine the depth of oceans and seas. A beam of ultrasonic sound is produced and travels through the seawater, which is transmitted by the transducer. When it reflects, an echo is produced, which is detected and recorded by the detector. It is then converted into electrical signals. The distance represented by ‘d’ of the under-water object is calculated from the time (represented as ‘t’) taken by the echo to return with speed (represented as ‘v’) is expressed as, 2d = v × t This method of measuring distance is also referred to as echo-ranging.
hame to apno ne loota gero me kahan dam tha
tabhi sochu ki sala farm me gunpowder kese kaam tha.......
😂deop was really trolled because i saw deop's that video
Lol @deopboii
Lmao 🤣
Deop is best 😂
Wa wa wa wa😅😅
6:19 😂😂😂
6:20 editor ne nashe kiye hai
6:19 Mr Lapis Fav Meme 😂
I laughed for 5 min 😂😂😂😂😂
@@venkatmore8089😂😂😂
1:27 😂
He is laughing evil laugh, Meanwhile I am laughing Mutahar laugh 😂😂😂
Ha bhai koi bhi mil gya to recording chalu kar ke to hey guys😂😂
Oooo accha tumne kiya ye sab😂😂😂😂
Yaa ni deopp ko apne marraa😂❤❤
Late late comment ker deta hu like toh waise bhi nhi milte 😂
Drop is laughing in lapis trying to get slime block😂😂😂
Saap ko pal Raha tha DeOp 😂
1:25 -1:27 lapis caught while scripting😅😂❤
True
False
Heh???
Second because ledis first 😂
Yooo love from Nepal
Please build Nepal flag in lapata smp
Let's vote for
👇
😂😂😂😂😂
So funny 😂😂😂😂😂😂😂😂😂😂
Mr. Lapis Bro ap hasata Bohot acche.35minit Ka video banao❤❤❤🎉🎉
Laugh bohot funny hai😂😂😂😂
Wah deop ki avaz ayi 1:27
Legends know deop is not AFK 😂😂
😅
No he is afk you didn't see his video
@@Not_aksh_ I saw 👀. He was trying to find who kill him. But he failed 😔
@@peal12 Oh yeah you're right 😀👍🏻
No
....
What the hack dude so you were the one who did that 😂😂
6:19 part best ever
Bhot Maza aya 😂😂😂😂🎉
No senpai was harmed in this video
wdym
Yes yes deop yes 😂
Yoo lapis bhai isi tarha consistent raho
😂😂
Dost log harami hi hote hein.😂😂😂😂
Thank you lapis bhai firemc main 1m dene ke liye I am .KillerGod091
😂Kiskis ne deop ki bhi video dekha hai
❤❤OP
L A P I S B H A I OP ❤
Only legend hear deop laugh at 1:25
Yes bro😂😂 scripted hai kya??
@@Suy0gExtraz may bee
@@tulsirammeena4983kids vo Mr lapis hai 😂
@@THEAnime-wx1fqthen u don't know deop voice kiddo
Listen it carefully child
2:01 shayad deop pehle push ho ke hila phir keyboard se hila = deop afk ni tha
De Op Ko Apne Mara Tha Mr Lapis
kisi ne 1:27 pe deop ki voice notice ki 😂
Mai nay ki par I am not sure kay wo deop ki awaz thi😊
Aa bhai aagya channel yaad
Lapis never disappoint us 🖤
Deop ke sath to scam ho gaya
Bro 1:27 pe deop ki awaaz thi kya ?
brooo lapis ase pear deop na video banay ha🤣🤣🤣🤣🤣🤣🤣🤣😅😅😅😅😅🙃🙃🙃🙃🙃
I'm second because ladies first 😅😂
Bro roast senpai spider at the end of the video
Meanwhile my brother watching deop video of 10,000 tnt and me be like gadari karbe
Modi got me daying😂😂😂😂😂😂😅😅
Edit:thanks for 1 like😢
Aap ki awaaz kini achhi hai ❤❤
Bhai ye farm to PSD1 aur DEOP ka hai 1:03
Hello bhai deopi video banaya hai usne bola hai Kaun mere Dil ko Tora😊😊
16. What is the loudness of sound? What factors does it depend on?
Solution:
Loud sounds have high energy. Loudness directly depends on the amplitude of vibrations. It is proportional to the square of the amplitude of vibrations of sound.
17. Explain how bats use ultrasound to catch prey.
Solution:
Bats have the ability to produce high-pitched ultrasonic squeaks. These squeaks get reflected by objects, like prey, and return to their ears. This helps a bat to know how far its prey is.
18. How is ultrasound used for cleaning?
Solution:
Objects that need to be cleansed are put in a cleaning solution, and ultrasonic sound waves are passed through the solution. The high frequency of ultrasound waves helps in detaching the dirt from the objects. In this way, ultrasound is used for cleaning purposes.
19. Explain the working and application of a sonar.
Solution:
SONAR is an abbreviation for Sound Navigation and Ranging. It is an acoustic device used in measuring the direction, speed, and depth of underwater objects, such as shipwrecks and submarines, using ultrasound.
Also, it is used to determine the depth of oceans and seas.
A beam of ultrasonic sound is produced and travels through the seawater, which is transmitted by the transducer. When it reflects, an echo is produced, which is detected and recorded by the detector. It is then converted into electrical signals. The distance represented by ‘d’ of the under-water object is calculated from the time (represented as ‘t’) taken by the echo to return with speed (represented as ‘v’) is expressed as,
2d = v × t
This method of measuring distance is also referred to as echo-ranging.
deop ke sath troll ho gya LOO
Deop ke sath kya kya Kiya lapis ne 😂😂
apne toh apne hote he dekhaa apne ko deop be like -_-
Mr lapis op in tha chat ❤❤
Psd bhaiya ka hai farm ❤❤
First 🥇
hamare bbhai ka laugh op in the cccomment section
I'm fast 😅
Deopboii dakho😂
Everyone anyone want to be manger of dc server Aaj launched kar ne wala hu
Guys anyone know why mrlapis have knockback in his sword it help him to escape from other players
Hi bro pz shoutout in your next vidio
i have same laugh like your evil laugh
Thanks For 130 subscribers
Now Road To 150 subscribers😢❤❤Pls Subscribe if u hate creeper
Bro love from nepal! but at 1:27 there someboby said ''heha'' (deop)??
deop said in his video who is kill me
and the one only lapis
Noob learn english
First
Gym
Evill 😂🤣🤣🤣🤣🤣 laugh
Hem😂😂😂
when gamers make videos in hurry
7:29
Bhai bahut parchar hai yrrr
Mast deopboii bhai mast
ahaahaaa
11:00 the Haker only type this
Firsttt😊
Bro senpai no 1 in afk killing
No2. Lapis
Lmaoooooooooooooooo
yes kea ho Gaye deop bhai
[laugh]
First comment 🥇
0:49
Lapis bhai ne afk player ko maarke apni aukat dikhadi 😅
😂😂😂😂😂😂
Whar's wrong with you😂
This isn't lifesteal hmmmm suspicious 🤔
Lapis Bhai aap na bolo na ki 2 moths bat subscribe Kar na ga
Big fan psd1
Deop just tell hahmmnn when u tell aree dosto popat hogaya
Op
In deop video see deop reaction 😂😂
Hi lapis bhi big fan
Deop Say haii in sleeping
Bhai apne betrayed kyun kiya😢 psd ko muera dil toot gya😢😢😢
lapis dont mess chaddi gang
Hii
Deop bhai be like i am in sky with this lmao kid
Deop Ka fam
😂😂😂😂😂😂😂😂😂😂😂😂😂