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 motion in which the friction reduces the mechanical energy of the system as times passes and the amplitude of motion reduces is called:

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SHM

Randum motion

Damped motion

None of these

With broadband information can be loaded:

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In 1 min

In 1 sec

In 1 day

In 2 days

The time period of frequency and time period is equal to:

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v

1

0

λ

Waves transfer:

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Energy

Wavelength

Velocity

frequency

If the mass of a spring mass system is doubled, its time period becomes:

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√2 T

T/2

√T/2

T/√2

The value of acceleration in simple harmonic motion at mean position is

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Maximum

Zero

10 N

Both a , b

Which of the following is an example of simple harmonic motion ?

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Motion of the simple pendulum

The motion of ceiling fan

The spining of the Earth on its axis

A bouncing ball on a floor

If a wave moves in a slinky spring with frequency of 4Hz and wave length of 0.4m, the speed of the wave will be:

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1.0 ms-1

1.2 ms-1

1.4 ms-1

1.6 ms-1

The instrument used to study the properties of waves is called:

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Ripple tank

Stroboscope

Pendulum

None of these

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

The speed of waves can be calculated by:

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Vt

d x t

f λ

Tf

The waves, which are used to detect the broken bones, are called:

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Light waves

x-rays

Sound waves

both b,c,

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