Physics MCQs from Books Chapter

1. What is the angle between F and d? when the work is done will be negative.

A. 90°

B. 180°

C. 360°

D. 45°

2. _______ is also called one joule per second.

A. Newton

B. Mass

C. Watt

D. Joule

E. Kilowatt

3. When displacement and force are in the same direction, then what will be the work done?

A. Minimum

B. Zero

C. -1

D. 1

E. Maximum

4. The Dot product of________ is also called power

A. F.t

B. F.v

C. F.d

D. F.m

E. None of these

5. Which of the following principle of conservation we used for rocket works

A. Angular momentum

B. Electricity

C. Mass

D. Energy

E. Momentum

6. Which of the following is the correct answer, if a body of mass 2 kg is raised vertically through 2m, then the work done will be

A. 39.2 J

B. 390.2 J

C. 38.2 J

D. 392.1 J

E. 6.5 J

7. Which of the following cell converts solar energy into electrical energy

A. Electromagnetic 

B. Galvanic

C. Rotary

D. Photovoltaic

8. Work is___________ quantity.

A. Fundamental

B. Conservation

C. Scalar

D. Vector

9. When the ratio of work done to the smallest interval of time is know as______

A. Instantaneous power

B. Instantaneous force

C. Instantaneous acceleration

D. Instantaneous velocity

10. What is the SI unit of energy

A. Joule

B. J/s

C. Watt

D. erg

E. None of these

11. Which one is correct.if velocity is doubled.

A. Momentum increases 2 times and K.E remain constant

B. Momentum increases 4 times and K.E 2 times

C. Momentum increases 2 times and K.E increase 4 times.

D. Momentum  and K.E remain the same

E. None of these

12. Both kinetic and potential energies are 

A. Two forms of torque

B. Not inter-convertible

C.  Not related with each other

D. Inter-Convertable