General Principles in the Working of Simple Pendulum, Simple Pulleys, Siphon NDA Questions

NDA Physics

General Principles in the Working of Simple Pendulum, Simple Pulleys, Siphon MCQ Questions


13.
The restoring force in a simple pendulum is directly proportional to which quantity?
A.
Mass of the bob
B.
Displacement angle
C.
Length of the string
D.
Amplitude of oscillation
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ANSWER :
B. Displacement angle
14.
In a simple pendulum, what is the relationship between time period and acceleration due to gravity?
A.
Time period is directly proportional to gravity
B.
Time period is inversely proportional to gravity
C.
Time period is independent of gravity
D.
Time period is equal to gravity
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ANSWER :
B. Time period is inversely proportional to gravity
15.
What is the angle of displacement in a simple pendulum for small amplitude oscillations?
A.
Less than 5 degrees
B.
Exactly 10 degrees
C.
Greater than 45 degrees
D.
Any angle works
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ANSWER :
A. Less than 5 degrees
16.
How does damping affect the motion of a simple pendulum?
A.
Increases amplitude
B.
Decreases amplitude
C.
Makes motion faster
D.
Removes oscillations completely
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ANSWER :
B. Decreases amplitude
17.
Which factor remains constant in the oscillatory motion of a simple pendulum?
A.
Speed
B.
Total energy
C.
Kinetic energy
D.
Displacement
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ANSWER :
B. Total energy
18.
What happens to the time period if the length of the pendulum is halved?
A.
Time period doubles
B.
Time period remains constant
C.
Time period decreases
D.
Time period increases
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ANSWER :
C. Time period decreases