วีดีโอ

Plz baki kay chapters bhi jaldi kerwaiye board exams say pehlay

Deeply and amazing explanation 💕💕

The lectures are very informative 👍🏻

Jazak Allah Sir

So good❤

7 rivers of sapta Sindhu are Ravi, Jhelum, sutlaj, Beas Chnab, Sindh and river Hakkra or river Surstvati.

Sapta Sindh is the old name of Punjab, Punjab is recently named by Mughals while Sapta Sindhu means land of seven rivers mention in 4000 years old book Regvaid

Sir ap 11 class k BH lec upload krn wo pharhyn hmm

Easiest explanation A symbol of a great teacher 👍

Great explanation 👍

Thank u sir

Confusion cleared

Concept cleared JazakAllah sr

MashaAllah

Sir by the way apka style unique ha physics ko samjahe ka thank you so much for giving your precious time ❤

Assalam o alikum sir kiya ap sindhi ho? Agar yes tu sir ap plzzz hume sindhi language bhi sikha de bcz sindhi language is very very important to built your future in sindh...

Bhai book mein -mgh hai Work done against gravity =-mgh But aapny +mgh use kiya hai Reply

Correct answer is OPTION (A)

Best explanation sir Keep it up May God bless you

Thankyou sir for making calculation and concepts that much easy as always.

Ans bataye

Sir Mashallah bht acha phartta ho ap🥰

Sir ap 11 class k BH lecture upload krty hn

Assalamuikum sir . Ye short me itnan sara likhy gy kiya answer

Wonderful Sir Very Superb Way to explain the TOpiC .. Great ❤❤❤

Amazing sir😊

❤❤❤ wonderful explanation sir

MaShaAllah Ada

Sir aap topic Bata Diya Karen Kay yai topic long Mein aata hai ya FIR short mein

❤❤❤ sir from larkana

❤❤❤❤❤

Book ki Definition parhate na app

Wonderful 👍 sir , such a great understanding.

very well explained👍👍

sir aap clas 11 k ppq’s solved krwa dein

Assalam o Alaikum Sir MashAllah MashAllah ap bhttt acha parhaty hain humen apka haar concept clear hojata h lkn me kuch kehna chahungi wo ye ke please sir ap thori camera ki quality achi rakhen taky humen jo board par likha hua ya ap diagram s samjhaty hain wo or ziyada clear ho thank you so much ❤

Time stamps: 0:12 1. A Carnot engine takes 2000J of heat from a reservoir at 500K does some work, and discards some heat to a reservoir at 350K. How much heat is discarded, how much work does the engine do, and what is the efficiency? (Ans: 1400J, 600J, 30%) 12:52 2. One kilogram of ice at 0°C is melted and converted to water at 0°C. Compute its change in entropy. (Ans: 1220 J·K⁻¹) 22:00 3. In a high-pressure steam turbine engine, the steam is heated to 600°C and exhausted at about 90°C. What is the highest possible efficiency of any engine that operates between these two temperatures? (Ans: 58.4 %) 27:40 4. Temperature difference between the surface water and bottom water in Manchester Lake might be 5°C. Assuming the surface water to be at 20°C. What highest efficiency a steam engine could have if it operates between these two temperatures? (Ans: 1.71%) 36:14 5. A heat engine works at the rate of 500kW. The efficiency of the engine is 30%. Calculate the loss of heat per hour. (Ans: 4.2 x 10⁹ J) 52:05 6. A heat engine performs work of 0.4166 watts in one hour and rejects 4500J of heat to the sink. What is the efficiency of engine? (Ans: 24.9%) 01:01:20 7. A Carnot engine operates between the temperatures 850K and 300K. The engine performs 1200J of work in each cycle, which takes 0.25 sec (a) What is the efficiency of this engine? (b) What is the average power of this engine? (c) How much energy is extracted as heat from the high temperature reservoir? (d) How much energy is delivered as heat to the low temperature reservoir? (Ans (a) 65% (b) 4.8kW (c) 1855J (d) 655J) 01:13:46 8. A Carnot engine absorbs 52kJ as heat and exhausts 36kJ as heat in each cycle. Calculate: (a) The engine efficiency (b) The work done per cycle in kilojoules. (Ans (a) 30.76% (b) 16kJ)

Concept cleared JazakAllah sir

Woww Sir! MashaAllah.. it was helpful...!

God blessed you sir😍 Marvelous lecture 😊🎉

Thank you so much

Mashallah ❤️

Sir plz your writing is not visible clear

Sir UN student ko PATA nhi hai k prhana k tarika yai hi HOTA hai

❤

well done sr

Concept cleared JazakAllah 💌

Mashallah sir ❤❤❤thank youu so much

Really appreciate your efforts Sir plz appload next lectures