Question # 1

A large ripple tank with a vibrator working at a frequency of 30 Hz produces 25 complete waves in a distance of 50 cm.

The velocity of the wave is:

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53 cms^-1

60 cms^-1

750 cms^-1

1500cms^-1

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

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Transverse waves

Longitudinal waves

Electromagnetic waves

None of these

Diffraction of wave can be observed clearly only when the size of slit or obstacle is nearly__________ to the wavelength of the wave:

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Two times

Equal

Four times

None of these

The disturbance travelling in a medium is called:

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Wave motion

Simple harmonic motion

Motion

both a ,b

The time required to complete one round trip (vibration) abut mena position is called:

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Time period

Freqency

Amplitude

None of these

Floppy has a storage capacity

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4-5 MB

3-4 MB

1-3 MB

3-6 MB

In CD presence of pits is indicated by:

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0

2

3

1

The S.I unit of Spring constant is:

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Nm

N

Nm-1

Ns

At mean position of pendulum, the potential energy of the pendulum is:

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Maximum

Minimum

Much more

Both a and c

If the distance is nspring is 'x' of mass 'm' attached with a spring then restoring force is:

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F =ma

F =kx

F = mx

F= m/a

Shock absorbers in automobiles are one practical application of:

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SHM

Random motion

Damped motion

None of these

Which of the following is a method of energy transfer.

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Conduction

Reatiation

wave motion

all of these

The time period of simple pendulum can be calculated by:

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T = 2π√L/g

T = 2 π √m/k

T = 2 π √g/L

T = 2 π √K/m

Which is not a hardware:

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CPU

Window

Keyboard

Mouse

The part of waves at which particles of the medium are below the normal position are called:

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Extreme positon

Crest

Trough

None of these

Which of the following devices can be used to produce both a transverse and longitudinal waves:

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A string

A ripple tank

A helical spring (slinky)

A tuning fork

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