Alpha Question Bank for Medical: Physics>Chapter 20 - Wave Motion on a String>Exercise-1>Q 11

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Earn 100

The equation of a wave is given by $y = a \sin (100 t - \frac{x}{10})$ , where $x$ and $y$ are in metre and $t$ in second; then the velocity of the wave is:

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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 12

What will be the wave velocity, if the radar gives

5.4

waves per minute and the wavelength of the given wave is

10 m

?

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Alpha Question Bank for Medical: Physics>Chapter 20 - Wave Motion on a String>Exercise-1>Q 13

Velocity of a sound wave is

360 m s^{- 1}

and frequency is

50 Hz

, then path difference will be at the phase difference of

60 °

is:

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Alpha Question Bank for Medical: Physics>Chapter 20 - Wave Motion on a String>Exercise-1>Q 14

A source

S

having frequency

600 Hz

is kept at rest at bottom of a flowing river. Find out the frequency detected by a stationary detector present above the river in air. [Velocity of sound in water

= 1500 m s^{- 1}

; velocity of sound in air

= 300 m s^{- 1}]

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Alpha Question Bank for Medical: Physics>Chapter 20 - Wave Motion on a String>Exercise-1>Q 15

Which one of the following statements is true?

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Alpha Question Bank for Medical: Physics>Chapter 20 - Wave Motion on a String>Exercise-1>Q 16

Two points are located at a distance of

10 m

and

15 m

from the source of oscillation. The period of oscillation is

0.05 s

and the velocity of the wave is

300 m s^{- 1}

. What is the phase difference between the oscillations of two points ?

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Alpha Question Bank for Medical: Physics>Chapter 20 - Wave Motion on a String>Exercise-1>Q 17

The terms pitch, quality and loudness of sound are associated with the following, respectively-

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Alpha Question Bank for Medical: Physics>Chapter 20 - Wave Motion on a String>Exercise-1>Q 18

The quality of the sound depends on

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Alpha Question Bank for Medical: Physics>Chapter 20 - Wave Motion on a String>Exercise-1>Q 19

Two periodic waves of intensities

I_{1}

and

I_{2}

pass through a region at the same time in the same direction. The sum of the maximum and minimum intensities is :