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No work is done on the system, but q amount of heat is taken out from the system and given to the surroundings. Express the change in internal energy (ΔU) of this system and what type of wall does the system have?

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Important Questions on Thermodynamics

MEDIUM
JKCET
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 14 - Thermodynamics>JKCET 2019>Q 4
A refrigerator is to maintain eatables kept inside at 9 degree celsius. If the room temperature is 36 degree celsius, then what is the coefficient of performance?
EASY
JKCET
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 14 - Thermodynamics>JKCET 2017>Q 5
An ideal Carnot's engine works between 227° and 57°C. Find the efficiency of the engine.
EASY
JKCET
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 14 - Thermodynamics>JKCET 2017>Q 6
Pick out the correct statement from the following