Q301
Open questionSpeed of sound waves is 700ms-1. How long time will the waves take to travel 7 km?
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Physics GK · all questionsSounds waves and Motion
Sounds waves and Motion
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Q302
Open questionA noise level of 100 decibel would correspond to
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Q303
Open questionLaw of superposition is applicable to only
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Q304
Open questionSound is heard over longer distances or rainy days because
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Q305
Open questionBeats are the results of
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Q306
Open questionThe full form of SONAR is
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Q307
Open questionIn which of the following option sound may not be across travel?
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Q308
Open questionThe speed of sound in different medium at 25°C. Which of the following question regarding this statement is/are correct?
A. The speed of sound in oxygen is 316 m/min.
B. The speed of sound in distilled water is 1498 m/min.
A. The speed of sound in oxygen is 316 m/min.
B. The speed of sound in distilled water is 1498 m/min.
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Q309
Open questionBats detect obstacles in their path by receiving the reflected
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Q310
Open questionConsider the following statements.
1. The heart vibrates at infrasonic.
2. The speed of sound is more in gas than in liquid and solid.
3. Mach number is used to describe the speed of sound.
4. Ultrasonic sound has frequency more than 20,000 Hz.
Of these statements.
1. The heart vibrates at infrasonic.
2. The speed of sound is more in gas than in liquid and solid.
3. Mach number is used to describe the speed of sound.
4. Ultrasonic sound has frequency more than 20,000 Hz.
Of these statements.
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Q311
Open questionThe optimum sound level for human beings is
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Q312
Open questionIn which type of waves do vibrations move parallel to the direction of the wave's movement?
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Q313
Open questionIf the frequency of a wave is doubled then its wavelength will be-
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Q314
Open questionWhat is the approximate minimum distance between source and reflector for echo?
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Q315
Open questionUltrasonic waves are produced by making use of
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Q316
Open questionThe walls of the ball, built for music concerts should
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Q317
Open questionConsider the following statements about ultrasonic waves.
1. They can destroy insects.
2. They can clean clothes by removing dust.
3. They can be used to treat diseases.
4. They can control automatic doors.
Of the above statements.
1. They can destroy insects.
2. They can clean clothes by removing dust.
3. They can be used to treat diseases.
4. They can control automatic doors.
Of the above statements.
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Q318
Open questionThe frequency which is not audible to the human ear is:
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Q319
Open questionWhich of the following is/are true regarding speed of sound in different mediums at 25°C?
A. In aluminium, the speed of sound is 6220m/s.
B. In nickel, the speed of sound is 6040 m/s.
A. In aluminium, the speed of sound is 6220m/s.
B. In nickel, the speed of sound is 6040 m/s.
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Q320
Open questionThe way the brain interprets the frequency of an emitted sound is called the . . . . . . . .
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