Question # 1

Wave equation is defined as:

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f = Tλ

f = V λ

V = 2fλ

V = fλ

The relation between v,f andλ of a wave is:

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vf=λ

fλ = v

vλ =f

v=λ/f

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

The speed of waves can be calculated by:

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Vt

d x t

f λ

Tf

Formula for time period of spring mass system is represented by:

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T = 2π√m/k

T = 2π √k/m

T = 1/2π√k/m

T = 1/2π√m/k

It mean position kinetic energy of the ball is:

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Minimum

Zero

Maximum

None of these

The water waves after striking the hurdle will:

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Reflect

Refract

Diffract

All a , b, c

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

A tuning fork

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

A large ripple tank with a vibrator working at a frequency of 30 Hz produces 25 complete wae in distance of 50 cm. The velocity of the wave is:

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54 cms^-1

60 cms^-1

750 cms^-1

1500 cms^-1

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