A mass m is suspended from a spring of negligible mass and the system oscillates with a frequency n. What will be the frequency of oscillations if a mass of 4 m is suspended from the same spring ?

(A)

(B)

2n

(C)

(D)

4n

Question-2

A simple pendulum is executing simple harmonic motion with a time period T. If the length of the pendulum is increased by 21%, the increase in the time period is:

(A)

21%

(B)

10%

(C)

30%

(D)

50%

Question-3

A simple pendulum hangs from the ceiling of a car. If the car accelerates with uniform acceleration, the frequency of the simple pendulum will:

(A)

Increase

(B)

Decrease

(C)

Become infinite

(D)

Remain constant

Question-4

If a simple harmonic oscillator has got a displacement of 0.02 m and acceleration equal to 2.0m/s^{2} at any time, the angular frequency of the oscillator is equal to:

(A)

10 rad/s

(B)

0.1 rad/s

(C)

100 rad/s

(D)

1 rad/s

Question-5

A spring has a certain mass suspended from it and its period of vertical oscillations is T. The spring is now cut into two halves and the same mass is suspended from one of the halves. Find out the period of vertical oscillation ?

(A)

(B)

2 T

(C)

(D)

T/2

Question-6

A body of mass 5 kg hangs from a spring and oscillates with a time period of 2 seconds. If the body is removed, the length of the spring will decrease by:

(A)

2 metres

(B)

g metres

(C)

g/k metres

(D)

k/g metres

Question-7

Two points are located at a distance of 10m and 15 m from the source of oscillation. The period of oscillation is 0.005 s and the velocity of the wave is 300 m/s. What is the phase difference between the oscillations of two points ?

(A)

(B)

(C)

(D)

Question-8

The total energy of a body performing S.H.M. depends on:

(A)

k,a,m

(B)

k,a,x

(C)

k,a

(D)

k,x

Question-9

Frequency of a simple pendulum in a freely falling lift will be:

(A)

Zero

(B)

Infinite

(C)

Finite

(D)

can't say

Question-10

The potential energy of a simple harmonic oscillator when the particle is halfway to its end point is:

(A)

(B)

(C)

(D)

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