Physics-(general)
NEET Physics (general) Assertion Reason Question
Type: Assertion Reason-assertion-Medium-Class 11
Assertion (A): In a perfectly circular orbit, the gravitational force does no work on the orbiting body.
Reason (R): The force is always perpendicular to the direction of displacement in a circular orbit.
A
Both A and R are true, and R is the correct explanation of A.
B
Both A and R are true, but R is not the correct explanation of A.
C
A is true, but R is false.
D
A is false.
Correct Answer
Option A
Detailed Explanation
In a circular orbit, the gravitational force acts radially inward while the displacement is tangential, making the angle 90°, thus no work is done.
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