Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 17 - Wave Motion>Objective Problems>Q 17

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The frequency of a tuning fork with an amplitude $A = 1 cm$ is $250 Hz$ . The maximum velocity of any particle in air is equal to

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Important Questions on Wave Motion

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 17 - Wave Motion>Objective Problems>Q 18

A wave of amplitude

A = 0.2 m

, velocity

v = 360 m s^{- 1}

and wavelength

60 m

is travelling along positive

x

-axis, then the correct expression for the wave is

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 17 - Wave Motion>Objective Problems>Q 19

A wave of frequency

400 Hz

has wave velocity of

300 m s^{- 1}

. The phase difference between the two displacements at a certain point at time

t = 10^{- 3} s

apart is

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 17 - Wave Motion>Objective Problems>Q 20

What is the phase difference(in

rad

), at a given instant of time, between two particles

25 m

apart, when the wave

y (x, t) = 0.03 sinπ (2 t - 0.01 x) m

travels in a medium?

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 17 - Wave Motion>Objective Problems>Q 21

A progressive wave in a medium is represented by the equation

y = 0.1 \sin (10 π t - \frac{5}{11} π x)

where,

y

and

x

are in

cm

and

t

in second. The maximum speed of a particle of the medium due to the wave is

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 17 - Wave Motion>Objective Problems>Q 22

A wave is represented by the equation

y = A \sin (10 π x + 15 π t + \frac{π}{3})

where,

x

is in metre and

t

is in second. The expression represents

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 17 - Wave Motion>Objective Problems>Q 23

A wave

y (x, t) = 0.03 \sin π (2 t - 0.01 x) m

travels in a medium. Here,

x

is in metre,

t

is in seconds. The instantaneous phase difference(in

rad

) between the two points separated by

25 cm

is,

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 17 - Wave Motion>Objective Problems>Q 24

The ratio of the maximum velocity of a particle to the velocity of wave is,

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Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 17 - Wave Motion>Objective Problems>Q 25

Equation of a progressive wave is given by

y = 0.2 \cos π (0.04 t + 0.02 x - \frac{π}{6})

. The distance is expressed in

cm

and time in

second

. What will be the minimum distance between two particles having the phase difference of

\frac{π}{2} ?