Question # 1

The force applied on the mass attached with a spring is represented by:

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f_a

f_c

f_ext

f_s

the distance between two consecutive trough or crest is called:

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wavelength

frequency

time period

amplitude

1 MB =

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1022KB

1023KB

1024KB

1025KB

the water waves after striking the hurdle will:

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reflect

refract

diffract

all a b and c

The waves in which particles of the medium vibrate parallel to the direction of waves are called:

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Longitudinal waves

Transverse waves

Electromagnetic waves

Both a and c

the unit of frequency is:

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hertz

vibration per second

cycle per second

all a, b and c

Ripple tank is an instrument which is used to study the characteristics of:

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Mechanical waves

Light waves

Radio waves

Electro-magnet waves

The unit of intensity of sound:

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wm^-1

wm

wm^-2

wm^-3

What is fitted in telephone receiver:

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Electromagnet

Diaphragm

Both a and b

None

the waves have properties:

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reflection

refraction

diffraction

all of these

Which form of energy is sound?

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Electrical

Mechanical

Thermal

Chemical

When a body moves to and fro about a point, its motion is called:

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Random motion

Vibratory motion

Linear motion

Rotatory motion

The sound level of rustling of leave is:

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1 dB

20 dB

30 dB

10 dB

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