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The height of crests of a wave is called

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Important Questions on Sound

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Science>Physics>Sound>Characteristics of Waves

To propagate both longitudinal and transverse waves, a material must have

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Science>Physics>Sound>Characteristics of Waves

A bomb blasts on moon. Its sound will be heard on earth after

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Science>Physics>Sound>Characteristics of Waves

A sound wave of frequency

245 Hz

travels with the speed of

300 {m s}^{- 1}

along the positive x-axis. Each point of the wave moves to and fro through a total distance of

6 cm

. What will be the mathematical expression of this travelling wave?

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Science>Physics>Sound>Characteristics of Waves

The equation of a wave is given by

y = 10 \sin ((\frac{2 π}{45}) t + α) .

If the displacement at

t = 0 s

5 cm,

then the total phase at

t = 7.5 s

HARD

Science>Physics>Sound>Characteristics of Waves

A point particle is acted upon by a restoring force

- k x^{3} .

The time period of oscillation is

T

when the amplitude is

A .

The time period for an amplitude

2 A

will be:

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Science>Physics>Sound>Characteristics of Waves

A wave travelling on a string is described by

y = \sqrt{π} s i n (10 x - π t + \frac{π}{4})

. All the physical quantities are in SI units. The frequency of the wave is

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Science>Physics>Sound>Characteristics of Waves

Which of the following equations represents a travelling wave?

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Science>Physics>Sound>Characteristics of Waves

Pitch of the sound depends on

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Science>Physics>Sound>Characteristics of Waves

A travelling harmonic wave is represented by the equation

y (x, t) = 10^{- 3} \sin (50 t + 2 x),

where

x

and

y

are in meter and

t

is in seconds. Which of the following is a correct statement about the wave?

EASY

Science>Physics>Sound>Characteristics of Waves

A progressive wave travelling along the positive

x -

direction is represented by

y (x, t) = A s i n (k x - ω t + ϕ)

. Its snapshot at

t = 0

is given in the figure.
Question Image

For this wave, the phase

ϕ

is:

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Science>Physics>Sound>Characteristics of Waves

The figure below shows pressure variation in two different sound waves in air with time at a given position. Both the figures are drawn to the same scale.

Question Image

Which of the following statement is true?

HARD

Science>Physics>Sound>Characteristics of Waves

A ball is moving uniformly in a circular path of radius

1 m

with a time period of

1.5 s

. If the ball is suddenly stopped at

t = 8.3 s,

the magnitude of the displacement of the ball with respect to its position at

t = 0 s

is closest to:

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Science>Physics>Sound>Characteristics of Waves

A stretched string fixed at both ends has

n

nodes then the length of the string in terms of wavelength is

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Science>Physics>Sound>Characteristics of Waves

Which of the following is not a transverse wave?

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Science>Physics>Sound>Characteristics of Waves

x - α \sin (ω t - π / 6)

and

x = α \cos ω t

, then the phase difference between the two waves is

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Science>Physics>Sound>Characteristics of Waves

Two simple harmonic motion, are represented by the equations $y_{1} = 10 \sin (3 π t + \frac{π}{3}); y_{2} = 5 (\sin 3 π t + \sqrt{3} \cos 3 π t)$ . Ratio of amplitude of $y_{1}$ to $y_{2} = x : 1$ . The value of $x$ is

MEDIUM

Science>Physics>Sound>Characteristics of Waves

A stationary body explodes into two parts of masses

M_{1}

and

M_{2}

. They move in opposite directions with velocities

v_{1}

and

v_{2}

. The ratio of their kinetic energies is

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Science>Physics>Sound>Characteristics of Waves

A pendulum vibrates with a time period of

1

second. The sound produced in it is in the range of

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Science>Physics>Sound>Characteristics of Waves

On an average, a human heart is found to beat

72

times a minute. Its frequency and period are

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Science>Physics>Sound>Characteristics of Waves

A simple wave motion is represented by $y = 5 (\sin 4 π t + \sqrt{3} \cos 4 π t)$ . Its amplitude is

The height of crests of a wave is called

Important Questions on Sound

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