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Class XI
PHYSICS
Chapter-14-OSCILLATIONS
WORKSHEET-3
1.
In case of a forced vibration, the resonance wave becomes very sharp when the
a. damping force is small.
b. restoring force is small.
c. applied periodic force is small.
d. quality factor is small.
2.
A simple pendulum has time period T. The bob is given negative charge and
surface below it is given positive charge. The new time period will be
a. less than T.
b. greater than T.
c. equal to T.
d. infinite.
3.
A body of mass 0.5 kg executes S.H.M of frequency 4 Hz. The amplitude of S.H.M is
1 cm. The maximum restoring force is take π = 10)
2
a. 0.32 N.
b. 3.2 N.
c. 32 N.
d. 320 N.
4.
Displacement between maximum potential energy position and maximum kinetic
energy position for a particle executing S.H.M is
a. -a.
b. +a.
c. a.
d. a/4
5.
A body executing simple harmonic motion has a maximum acceleration equal to
24 m/s and maximum velocity equal to 16 m/s. The amplitude of simple
2
harmonic motion is
a. 32/3.
b. 3/32.
