AIIMS 2017 Physics Coefficient of Friction MCQ Question
Photoelectric effect experiments are performed using three different metal plates p, q and r having work functions , and respectively. A light beam containing wavelengths of , and with equal intensities illuminates each of the plates. The correct I-V graph of the experiment is (take )
2 N
4 N
6 N
3 N
Correct Answer
Detailed Explanation
The coefficient of friction () between the stick and the ring is given as . To determine , we need to consider the forces acting on the stick; if the maximum static friction force is equal to the weight of the stick, then must be 20 N, making . Thus, option A (2 N) is correct as it satisfies the condition for static friction.
Options B (4 N), C (6 N), and D (3 N) do not satisfy the relationship defined by the coefficient of friction and the forces involved, as they would imply a higher or lower friction than what is necessary to maintain equilibrium.
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