Which one of the following is not an electromagnetic wave?
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Physics GK · all questionsSounds waves and Motion
Sounds waves and Motion
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Statement I Sound waves cannot propagate in vacuum.
Statement II Sound waves are elastic waves and require a medium to propagate.
Statement II Sound waves are elastic waves and require a medium to propagate.
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The characteristic of sound which distinguishes a female voice from a male voice is called
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Sound travels faster in solids than in gases because
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As per the WHO, the safe noise level for a city is
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In television broadcast, the picture signals are transmitted by
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When T.V. is switched on
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Which of the following statements regarding sound waves is not correct?
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Assertion (A): Reveraberation mainly feels in large churches and in other large buildings.
Reason (R): The walls, roof and ground may cause multiple sound reflections.
Reason (R): The walls, roof and ground may cause multiple sound reflections.
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Which of the following types of light carries a signal from a television remote to the device it controls?
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What is the standard unit for measuring the frequency of a sound wave?
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Oscillatory motion is that motion
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What is called the sound wave above than frequencies of 30,000 Hz?
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The bats can fly in the dark because they
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Which one of the following phenomena cannot be exhibited by sound waves?
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In . . . . . . . . speed of sound is the fastest.
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The propagation of sound waves in a gas involves
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Sound intensity is measured-
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What is the minimum distance (in metres) required to hear an echo?
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What is the frequency of Infrasonic waves?
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