Q241
Open questionDecibel is the unit of
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Physics GK · all questionsSounds waves and Motion
Sounds waves and Motion
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Q242
Open questionThe speed of sound depends on which property of the medium.
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Q243
Open questionWhat are transverse waves?
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Q244
Open questionWhich one of the following statements about sound is not correct?
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Q245
Open questionThe frequency of a wave travelling at a speed of 500ms-1 is 20Hz. It's time period is-
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Q246
Open questionAt what stage should the medium required for the transmission of sound-
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Q247
Open questionA spring can be used to determine the mass m of an object in two ways : I by measuring the extension in the spring due to the object and II by measuring the oscillation period for the given mass.
Which of these methods can be used in a space-station orbiting the earth?
Which of these methods can be used in a space-station orbiting the earth?
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Q248
Open questionThe technique used to absorb noise by using soft and porous surface is called:
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Q249
Open questionA sound wave travels at a speed of 340 m/s. If its wavelength is 2 cm, what is the frequency of the wave?
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Q250
Open questionWhat is the decibel level of sound produced by two persons in conversation?
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Q251
Open questionTwo waves, each of amplitude 1.5 mm and frequency 10 Hz, are travelling in opposite direction with a speed of 20 mmls. The distance in mm between adjacent nodes is
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Q252
Open questionWhich is the incorrect statement with regard to ultrasound waves?
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Q253
Open questionSound waves
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Q254
Open questionThe speed of sound is faster in
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Q255
Open questionFill in the blank with the most appropriate option.
Pitch of sound depends on . . . . . . . .
Pitch of sound depends on . . . . . . . .
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Q256
Open questionWhich one of the following units is used for measurement of noise pollution?
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Q257
Open questionWhat is the repetition of sound, produced by the reflection of sound waves?
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Q258
Open questionA sound wave produced at wavelength 2.5m, its frequency is 400 Hz. Find the velocity of wave.
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Q259
Open questionWhich of the following is not a quality of sound waves?
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Q260
Open questionSound wave is not characterized-
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