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A sound increases its decibel reading fr...

A sound increases its decibel reading from `20 "to" 40 dB`. This means that the intensity of the sound

A

doubled

B

20 times greater

C

1000 times greater

D

100 times greater

Text Solution

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The correct Answer is:
B
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TARGET PUBLICATION-WAVE MOTION -MCQ 7.1
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  10. The equation of a transverse travelling on a rope is given by y=10sinp...

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  13. The equation of sound wave travelling along negative X-direction is gi...

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  14. A progressive wave is represented by the equation y= 0.5 sin ( 314t- ...

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  15. A wave of frequency 400 Hz has a phase velocity of 300 m/s The phase d...

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  16. A prograssive wave of frequency 500 Hz is travelling with a speed of 3...

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  17. If the speed of the wave shown in the figure is 330m//s in the given m...

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  18. The equation of a wave is y=A sin (2pint) When it is reflected at a f...

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  19. A bat flying above lake emits ultrasonic sound of 100 kHz ,When this w...

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