Physics
Oscillation
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#161 The displacement of SHM is written as \(x = x_0 \sin \omega t\). If displacement is written by \(x = x_0 \cos \omega t\), then phase constant will be equal to
A) 0°
B) 45°
C) 90°
D) 180°
#162 The time period of a simple pendulum is 2 seconds. If its length is increased by 4 times, then its period becomes
A) 8 s
B) 12 s
C) 16 s
D) 4 s
#163 The frequency of the second pendulum is
A) 2 Hertz
B) 1 Hertz
C) 0.5 Hertz
D) 1.5 Hertz
#164 A simple pendulum suspended from the ceiling of a lift has time period T when the lift is at rest. When the lift falls freely, the time period is
A) Infinite
B) T
C) Zero
D) 2T
#165 The length of a simple pendulum is increased then its time period will
A) Decrease
B) Increase
C) Remain same
D) First increase then decrease
#166 The restoring force of SHM is maximum when particle is at
A) Mean position
B) Extreme position
C) In between mean and extreme
D) All positions during SHM
#167 The SI unit of force constant is identical with that of
A) Force
B) Pressure
C) Surface tension
D) Loudness
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