Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-conceptual-Easy-Class 11
Which of the following statements about work and energy is correct?
A
The work done by a force can be zero if the force acts at right angles to the displacement.
B
Only positive work can be done by the gravitational force in all scenarios.
C
Work done by friction is always positive since it opposes motion.
D
The unit of work and energy is different in physics and everyday language.
Correct Answer
Option A
Detailed Explanation
The gravitational force does no work when acting at right angles to displacement, as stated in the context. This is true for both the block on a table and the moon's orbit around the earth.
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