MCQ Transfer of Heat by Radiation, Class 11 Physics

1. There will be total 20 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying

1. Which of the given phenomenon is not related to convection?

In winter metallic handles appear colder than wooden door

Maintaining comfortable room temperature in cold countries

Formation of trade winds

Formation of land and sea breezes

Question 1 of 20

2. Which is the fastest mode of heat transfer?

Convection

Conduction

Transition

Radiation

Question 2 of 20

3. The heat of sun comes to us through:

Convection

Sublimation

Conduction

Radiation

Question 3 of 20

4. What is the velocity of radiation?

c

3 X 10⁸ m/s

3 X 10⁷ m/s

Both c and b

Question 4 of 20

5. If the temperature difference between the body and surrounding is small, then the rate of loss of heat is directly proportional to

Temperature of two bodies

Nature of two bodies

Pressure difference of the body

Size of the two bodies

Question 5 of 20

6. SI unit of thermal conductivity is

A

B

C

D

Question 6 of 20

7. The mechanism of transfer of heat between two adjacent parts of a body because of their temperature difference is known as

Conduction

Convection

Sublimation

Fusion

Question 7 of 20

8. The temperature range upto which Newton's law of cooling holds good

30-35°C

25-30°C

30-40°C

20-25°C

Question 8 of 20

9. Newton's law of cooling states that the rate of cooling of a body is proportional to the _____________________.

temperature of the surroundings

excess temperature of the body over the surroundings.

temperature of the body

temperature of the body + temperature of the surroundings

Question 9 of 20

10. Value of coefficient of thermal coefficient is:

Same incase of conductors and insulators

Good incase of conductors and small incase of insulators

Doesn’t depend on insulators and conductors

Small incase of insulators and good incase of insulators

Question 10 of 20

11. Among the following methods of heat transfer, gravity does not play any part in

Convection

Radiation and Conduction

Radiation

Convection and Conduction

Question 11 of 20

12. The process by which heat is transferred from one place to another without heating the intervening medium is known as

Convection

Radiation

Sublimation

Fusion

Question 12 of 20

13. The process by which heat flows from the region of higher temperature to the region of lower temperature by actual movement of material particles is called

Sublimation

Radiation

Convection

Conduction

Question 13 of 20

14. What is the coefficient of thermal conductivity K?

A

B

C

D

Question 14 of 20

15. Mercury is a liquid which is heated by:

Convection

Radiation

Conduction

Transfusion

Question 15 of 20

16. What are units of K?

A

B

C

D

Question 16 of 20

17. Rate of conduction of heat depends on:

Area of cross section

Temperature difference

Material

Both a and b

Question 17 of 20

18. Which of the given relation is true for Newton's law of cooling?

A

B

C

D

Question 18 of 20

19. Which of the relation is true for the heat current?

A

B

C

D

Question 19 of 20

20. What is the expression for temperature gradient?

A

B

C

D

Question 20 of 20

 Loading...