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Physics Class 11 - Chapter 7
OscillationsTest - 3
1.
If length of second pendulum is made four times, then its time period is?
a) Four times
b) Two times
c) Six times
d) Eight times
2.
Displacement of the body in S.H.M is equal to amplitude when body is at?
a) Maximum position
b) None of these
c) Mean position
d) Wherever
3.
The distance covered by a body in one complete vibration is 20cm,its amplitude will be?
a) 5.5cm
b) 5cm
c) 15cm
d) 10cm
4.
Total energy of a body executing S.H.M is directly proportional to?
a) Amplitude
b) Reciprocal of amplitude
c) quare of amplitude
d) Square root of amplitude
5.
For a simple pendulum the restoring force is caused by?
a) Spring
b) Hand
c) Gravity
d) Air
6.
The time period of second pendulum is?
a) 3 seconds
b) 6 seconds
c) 2 seconds
d) 4 seconds
7.
In case of simple pendulum, the cause of damping is?
a) Drag force of air
b) None of these
c) Tension in string
d) Gravity
8.
The energy absorbed by a body at resonance position is?
a) Just maximum
b) Infinite
c) Maximum as well as minimum
d) Just minimum
9.
The length of second pendulum is?
a) 99 cm
b) 100 cm
c) 90 cm
d) 99.1 cm
10.
The acceleration of a projection on the diameter for a particle moving along a circle is?
a) w
2
x
b) -w
2
x
c) -wx
2
d) wx
2
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