Heat and Thermodynamics MCQ question and answer with solution

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Each section contains 100 MCQs on Heat and Thermodynamics .

The temperature of the sun is measured with

A) platinum thermometer B) gas thermometer C) pyrometer D) vapour pressure thermometer

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Cryogenic shows-

A) Low temperature B) high temperature C) Low pressure D) high pressure

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

It is more comfortable to wear white cloth in summer because

A) They reflect all the heat falling on them B) They radiate heat transferred from the body C) They absorb perspiration D) They are soothing to the eye

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Gases have

A) only aerial expansion B) only volume expansion C) no definite shape D) Both B and C

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Which of the following law states that good absorbers of heat are good emitters?

A) Stefan's Law B) Kirchhoff's Law C) Planck's Law D) Wien's Law

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The average kinetic energy of the molecules of an ideal gas is directly proportional to

A) velocity of molecules B) mass of molecules C) absolute temperature of the gas D) temperature of environment

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

The first law of thermodynamics is simply the case of

A) Charle's Law B) Newton's Law of Cooling C) The Law of Heat Exchange D) The Law of Conservation of Energy

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Consider the following statements.
Assertion (A) Light coloured clothes are preferred in summer.
Reason (R) Light colours are poor absorbers of heat.
Select correct answer:

A) Both A and R are true and R is the correct explaination of A B) Both A and R are true, but R is not the correct explaination A C) A is true, but R is false D) A is false, but R is true

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

A hot body cools from 90°C to 75°C in 25 second. The same body in further cooling from 75°C to 60°C will take how much time?

A) 25 seconds B) Less than 25 seconds C) More than 25 seconds D) Nothing can be said

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

The amount of radiation mainly depends upon the-

A) Nature of the body B) Temperature of the body C) Type of surface of the body D) All of the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

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Heat and Thermodynamics MCQ question and answer with solution | Physics Gk MCQs