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Intuition of Beats

A small sourc...

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A small source of sound vibrating at frequency 500 Hz is rotated in a circle of radius 100/π cm at a constant angular speed of 5.0 revolutions per second. A listener situation situates himself in the plane of the circle. Find the minimum and the maximum frequency of the sound observed. Speed of sound in air = 332 m s−1. (is angular speed 10 pi?)

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Q. A small source of sound vibrating at frequency 500 Hz is rotated in a circle of radius 100/π cm at a constant angular speed of 5.0 revolutions per second. A listener situation situates himself in the plane of the circle. Find the minimum and the maximum frequency of the sound observed. Speed of sound in air = 332 m s⁻¹.

Q. A source of sound having frequency

100

Hz is rotating in a circle of radius

2

m with a speed of

30

m/s. The frequency detected by an observer at the centre of circle is? [Take speed of sound in air as

330

Q. A whistle of frequency

540 Hz

rotates in a circle of radius

2 m

at an angular speed of

15 rad/sec

. What will be the frequency heard by a listener a long distance away at rest with respect to the centre of the circle when the source is at

B

. (Speed of sound

= 330 m/s

Q. A whistle of frequency 540 Hz rotates in a horizontal circle of radius 2m at an angular speed of 15 rad/s. The highest frequency heard by a listener at rest with respect to the centre of circle:

(velocity of sound in air = 330ms

^{- 1}

)

Q. A source emitting sound at frequency 4000 Hz, is moving along the Y-axis with a speed of 22 m s⁻¹. A listener is situated on the ground at the position (660 m, 0). Find the frequency of the sound received by the listener at the instant the source crosses the origin. Speed of sound in air = 330 m s⁻¹.

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