Physics MCQs with Answers

This is Physics MCQs section with detailed explanations for preparation of screening tests, interviews for government jobs. In this section candidate will learn MCQs on variety of topics from the subject.

1. 751 Adiabatic process is also called______________
   

   1. Heat exchange process

   2. Heating process

   3. Isentropic process

   4. All of the above

   See Answer

   Added By: Ak Aamir

   Answer

   : Isentropic process

   Explanation

   :
   N/A

2. 752 The work done in the isochoric process is________________
   

   1. constant

   2. variable

   3. zero

   4. depends on situation

   See Answer

   Added By: Ak Aamir

   Answer

   : zero

   Explanation

   :
   N/A

3. 753 For the successful operation of Heat engine which condition should be met
   

   1. cyclic process

   2. operated at certain temperature difference

   3. both A and B

   4. none of these

   See Answer

   Added By: Ak Aamir

   Answer

   : both A and B

   Explanation

   :
   N/A

4. 754 The purpose of flywheel in the engines is________________
   

   1. to smooth out the energy variation

   2. to add more weight to engine to work it stable

   3. to start engine

   4. both A and B

   See Answer

   Added By: Ak Aamir

   Answer

   : to smooth out the energy variation

   Explanation

   :
   N/A

5. 755 Petrol engine is a________________
   

   1. C.I engine

   2. SI engine

   3. IC engine

   4. all the above

   See Answer

   Added By: Ak Aamir

   Answer

   : all the above

   Explanation

   :
   N/A

6. 756 Which quantity is a state function_______________
   

   1. internal energy

   2. heat supply

   3. pressure

   4. volume

   See Answer

   Added By: Ak Aamir

   Answer

   : internal energy

   Explanation

   :
   N/A

7. 757 The unit of entropy is________________
   

   1. J.K

   2. J/K

   3. N.m/sec

   4. Kgm2/sec2.K

   See Answer

   Added By: Ak Aamir

   Answer

   : J.K

   Explanation

   :
   N/A

8. 758 The performance of a refrigerator is described by________________
   

   1. efficiency

   2. coefficient of performance

   3. both A and B

   4. not described

   See Answer

   Added By: Ak Aamir

   Answer

   : coefficient of performance

   Explanation

   :
   N/A

9. 759 In which process all the heat supplied is converted into work done
   

   1. isothermal

   2. isochoric

   3. isobaric

   4. isentropic

   See Answer

   Added By: Ak Aamir

   Answer

   : isothermal

   Explanation

   :
   N/A

10. 760 The value of for diatomic gas is_______________
    

    1. 1.67

    2. 1.4

    3. = 1.3

    4. None

    See Answer

    Added By: Ak Aamir

    Answer

    : 1.4

    Explanation

    :
    N/A