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A vehicle with a horn of frequency f is ...

A vehicle with a horn of frequency f is moving with a velocity of `30 m s^(-1)` in a directin perpendicular to the straight line joiing the oserver and the vehicle .The observeer perceives the sound to have a frequency `(f+f_1)`.If the velocity of sound in air is `300 m s^(-1)`:

A

`f_1=10f`

B

`f_1=0`

C

`f_1=0.1f`

D

`f_1=-

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JBD PUBLICATION-Oscillations and Waves-EXAMPLE
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  8. Define longitudinal wave.

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  11. What is the differential equatio of S.H.M.?

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  12. Can we ever consrtruct an ideal simple pendulum?

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  13. Can a body have zero velocity and still be accelerated?

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  14. What is the relation between path difference and phase difference?

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  15. What types of waves are possible in solids?

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  16. In which medium a wave can propagate?

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  17. What is the effect of pressure on the speed of sound?

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  18. How can the frequency of a tuning fork be changed?

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  19. why a tunung fork should be struck gently with a rubber pad?

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