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Chapter 7 - Oscillations - 1
1.
Tuning of a Radio set is an example of:-
a) Electrical resonance
b) Free vibrations
c) Mechanical resonance
d) Musical resonance
2.
The expression for time period of mass spring system is given by:-
a) T = 2
p
Ö
m / k
b) T = 2
p
Ö
L / g
c) T = 2
p
Ö
k / m
d) T =
p
Ö
k / m
3.
The heating and cooking of food evenly by microwave oven is an example of:-
a) Resonance
b) Damped oscillations
c) S.H.M.
d) None of these
4.
In the equation of S.H.M., a = -
w
2
x negative sign indicates the direction of motion of particle:-
a) Towards or away from mean
b) Towards mean position
c) Away from mean position
d) Perpendicular to mean position
5.
Angular velocity is related to angular frequency by equation:-
a) f = 2
p
w
b)
w
= 2
p
T
c)
w
= 2
p
/ f
d)
w
= 2
p
f
6.
In an isolated system the total energy of the vibrating mass and spring is:-
a) High
b) Low
c) Variable
d) Constant
7.
While deriving the equation of time period for simple pendulum which quantity should be kept small:-
a) Acceleration due to gravity
b) Length of a pendulum
c) Amplitude
d) Mass of a pendulum
8.
The angular velocity of a vibrating body is given by:-
a)
w
=
Ö
k / m
b)
w
= k / m
c)
w
= k /
Ö
m
d)
w
=
Ö
k/m
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