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Longitudinal waves cannot

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Important Questions on Mechanical Wave

MEDIUM
Physics
IMPORTANT
In a stationary wave,
HARD
Physics
IMPORTANT

The rope shown at an instant is carrying a wave travelling towards right, created by a source vibrating at a frequency n. Consider the following statements. 

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HARD
Physics
IMPORTANT
A transverse sine wave moves along a string in the positive x-direction at a speed of 20 cm s-1. The wavelength of the wave is 1 m and its amplitude is 10 cm. The snapshot of the wave is shown in the figure. The acceleration and velocity of point P whose displacement at this instant is 5 cm are ap and vp respectively. Then
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EASY
Physics
IMPORTANT
The intensity of a sound appears to an observer to be periodic. Which of the following can be the cause of it?
MEDIUM
Physics
IMPORTANT
As a wave propagates
MEDIUM
Physics
IMPORTANT
Consider an element of a stretched string along which a wave travels. During its transverse oscillatory motion, the element passes through a point at y=0 and reaches its maximum at y= ym. Then, the string element has its maximum
MEDIUM
Physics
IMPORTANT
A sound absorber attenuates the sound level by 20 dB. The intensity decreases by a factor of
MEDIUM
Physics
IMPORTANT
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