NEET Physics Damped & Forced Oscillations Assertion Reason Question
Assertion (A): In a damped oscillating system, the mechanical energy decreases over time. | Reason (R): The damping force is proportional to the velocity of the oscillator.
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false but R is true.
Correct Answer
Detailed Explanation
The NCERT context states that mechanical energy decreases due to external forces like drag, which transfer energy to thermal energy. The damping force given by Fd = -bv is proportional to velocity, explaining the energy loss.
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