Explore topic-wise MCQs in Physics.

This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.

1.

For a freely falling body, which of the following quantities will not change?

A. Total kinetic energy
B. Total potential energy
C. Total mechanical energy
D. Insufficient data
Answer» D. Insufficient data
Discussion
2.

When a person intakes 3000 kcal of food, he is able to do work requiring energy of 2500 kcal. This means that the human body destroys a fraction of energy obtained from food.

A. True
B. False
Answer» C.
Discussion
3.

When a roller coaster is at the top of a steep hill, its potential energy is maximum. When it hurdles down the slope and comes to the bottom, the potential energy reduces greatly. Hence we can say that the law of conservation of energy is not valid here since energy is destroyed.

A. True
B. False
Answer» C.
Discussion
4.

Fire is a form of _____

A. solar energy
B. thermal energy
C. gravitational energy
D. kinetic energy
Answer» C. gravitational energy
Discussion
5.

The maximum potential energy in a roller coaster is at _____

A. the top of the steep climb
B. somewhere during the climb
C. somewhere during the descent
D. the lowest point after the climb
Answer» B. somewhere during the climb
Discussion
6.

The energy possessed by an object because of its motion is termed _____

A. potential energy
B. kinetic energy
C. nuclear energy
D. solar energy
Answer» C. nuclear energy
Discussion
7.

The law of conservation of energy is not applicable to mechanical systems as they require energy input to keep working.

A. True
B. False
Answer» C.
Discussion
8.

The dimensions of energy are _____

A. [ML<sup>2</sup>T<sup>-2</sup>]
B. [MLT<sup>-2</sup>]
C. [ML<sup>2</sup>T<sup>-1</sup>]
D. [MLT<sup>-1</sup>]
Answer» B. [MLT<sup>-2</sup>]
Discussion