Alpha Question Bank for Medical: Physics>Chapter 20 - Wave Motion on a String>Exercise-1>Q 108

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Which one of the following represents a wave -

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Important Questions on Wave Motion on a String

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Alpha Question Bank for Medical: Physics>Chapter 20 - Wave Motion on a String>Exercise-1>Q 109

The equations of displacement of two waves are given as $y_{1} = 10 \sin (3 π t + \frac{π}{3})$ ,
$y_{2} = 5 (\sin 3 π t + \sqrt{3} \cos 3 π t) .$ Then what is the ratio of their amplitudes?

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Alpha Question Bank for Medical: Physics>Chapter 20 - Wave Motion on a String>Exercise-1>Q 110

When a wave enters from air to any medium, then what remains unchanged

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Alpha Question Bank for Medical: Physics>Chapter 20 - Wave Motion on a String>Exercise-1>Q 112

A wave

y = 10 \sin (a x + b t)

is reflected from a dense medium at an origin. If

81 %

of energy is reflected then the equation of reflected wave is-

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Alpha Question Bank for Medical: Physics>Chapter 20 - Wave Motion on a String>Exercise-1>Q 113

Two-wire of length

1 m

and

2 m

, respectively, and mass

150 gm

and

300 gm

, respectively. If the tensions are the same on both the wires, the ratio of velocities of transverse waves will be

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Alpha Question Bank for Medical: Physics>Chapter 20 - Wave Motion on a String>Exercise-1>Q 114

Four wires of identical length, diameters and of the same material are stretched on a sonometer wire. If the ratio of their tensions is

1 : 4 : 9 : 16,

then the ratio of their fundamental frequencies are,

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Alpha Question Bank for Medical: Physics>Chapter 20 - Wave Motion on a String>Exercise-1>Q 115

When the length of the vibrating segment of a sonometer wire is increased by

1 %

the percentage change in its frequency is(in

%

)

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Alpha Question Bank for Medical: Physics>Chapter 20 - Wave Motion on a String>Exercise-1>Q 116

If vibrations of a string are to be increased by a factor of two, then tension in the string must be made

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Alpha Question Bank for Medical: Physics>Chapter 20 - Wave Motion on a String>Exercise-1>Q 117

The wire of a sonometer has a length of

1 m

and mass

5 \times 10^{- 4} kg

. It has a tension of

20 N

. If the wire is pulled at a point

25 cm

away from one end and released, the frequency of its vibrations will be