Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-diagram based-Medium-Class 12
Consider a diagram of a physical balance where the beam B is supported by a knife-edge E resting on a horizontal plate. The pans P1 and P2 rest on supports A1 and A2, respectively. What is the function of the knob K in this setup?
A
To raise and lower the beam B during measurements.
B
To adjust the weight on the pans P1 and P2.
C
To calibrate the pointer P for accurate readings.
D
To lock the pans in place during measurements.
Correct Answer
Option A
Detailed Explanation
The knob K is used to raise and lower the beam B, as described in the NCERT context, which allows for the initiation of oscillatory motion in the pointer P.
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