Oscillatory Motion

Q. A pendulum oscillates 20 times in 4 seconds. Find its time period

1. $0.001sec$
2. $0.1sec$
3. $0.2sec$
4. $0.05sec$

Q.

Can longitudinal waves travel without a medium?

Q.

What is arbitrary motion?

Q.

Which of the following does not allow sound propagation?

1. vacuum

2. steel

3. air

4. water

Q.

Motion of a rolling ball is an example of

1. Periodic motion

2. Non-Periodic motion

3. Vibratory motion

Q. Sound can travel through:

1. Solids only
2. Liquids only
3. Gases only
4. Solids, liquids and gases

Q.

A simple pendulum takes $5$ seconds to complete $12$ oscillations. What will be the time period of pendulum?

1. $0.5s$
2. $0.12s$
3. $0.60s$
4. $0.42s$

Q.

The to and fro motion of an object is called ___________ (rotatory/oscillatory) motion.

Q.

Describe an experiment to prove that sound can transmit through liquids.

Q.

Is sound travel in a vacuum?

Q.

The skin of the drum on a hammering produces oscillatory motion.

1. True
2. False

Q.

Give an example of a periodic motion?

Q. Repeated to and fro motion of an object from a fixed point is known as ___ motion.

Q. A body under periodic motion necessarily oscillates.

1. True
2. False

Q. Sound can travel through _______. ​

Q.

Consider that the bob of a simple pendulum has moved from its mean position to one of its extreme positions and then again to mean position from where it moved to the other extreme position and then back to the mean position. The bob of the simple pendulum has now completed:

1. Two oscillations

2. Half oscillation

3. One oscillation

4. Zero oscillations

Q. The body is said to be in a motion if it repeats its motion in a fixed interval of time.

1. circular
2. rectilinear
3. periodic

Q. A pendulum makes 135 oscillations in a duration of 15 seconds. The time period of the pendulum is .

1. $0.3535s$
2. $0.1111s$
3. $0.0808s$