Chap#07 Oscillations

Question 1

Which one of the following is a simple harmonic motion?

Answer 1

A wave moving through a string fixed at both ends

Question 2

In which case does the potential energy decrease?

Answer 2

One is the rising of an air bubble in the water

Question 3

If the metal bob is a simple pendulum is replaced by a wooden bob, then its time period will:

Answer 3

Remain the same

Question 4

If the period of oscillation of mass (M) suspended from a spring is 2s, then the period of mass 4M will be:

Answer 4

4 s

Question 5

The time period of a simple pendulum is 2 seconds. If its length is increased by 4 times, then its period becomes:

Answer 5

4 s

Question 6

When the displacement is half of the amplitude, the ratio of potential energy to the total energy:

Answer 6

1/4

Question 7

To make the frequency double of an oscillator, we have to:

Answer 7

Reduce the mass to one-fourth

Question 8

In a simple harmonic motion (SHM), which of the following does not hold?

Answer 8

The potential energy is maximum the mean position

Question 9

A pendulum clock set to give the correct time in Karachi is taken to Quetta. It would give the correct time if:

Answer 9

The length of the pendulum is decreased