SKY LIGHT LANGUAGE SCHOOL PREP TWO

The movement of a swing is known as……………….

• transitional motion.

• oscillatory motion.

• wave motion.

• (a) and (b) together.

The oscillating body moves at the two sides of its rest position, so its velocity…………

• decreases when it goes far from its rest position.

• increases when it goes far from its rest position.

• will reach its maximum value when it passes its rest position.

• (a) and (c) together.

All of the following are examples of oscillatory motion except……..

• Motion of string.

• motion of tuning.

• motion of car.

• motion of a simple pendulum.

The amplitude of the simple pendulum is a ………complete vibration.

• half

• double

• quarter

• four times

The maximum displacement achieved by the oscillatory body away from is rest position is ……….

• Amplitude.

• frequency

• periodic time.

• complete oscillation.

Transvers wave consists of …………

• crests and troughs.

• Compressions and refractions.

• Troughs and refractions.

• Compressions and crests

All of the following are transvers waves except……… waves.

• water

• sound

• radio

• light

Sound waves are longitudinal waves, because the particles of the medium …..

• don 't need a medium to propagate through.

• don't vibrate.

• vibrate along the direction of wave propagation.

• vibrate in a direction perpendicular to the direction of wave propagation.

The frequency of the oscillating body is measured by a unit called

• Hertz.

• watt/m.

• decibel.

• m/sec.

10. The periodic time of an oscillating body which makes 240 oscillations in one

minute equals…..

• ¼ sec

• ½ sec

• 4 sec.

• 1 sec.