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Wave Speed

Light can tra...

Question

Light can travel in vacuum but not sound because

A

speed of sound is very smaller than speed of light

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B

light waves are electromagnetic in nature

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C

sound waves are electromagnetic in nature

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D

speed of light is very high

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Solution

The correct option is B light waves are electromagnetic in nature
Light is an electromagnetic wave, hence it does not require medium to propagate on the other hand sound wave is a mechanical wave and requires medium to propagate.

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Similar questions

Q. Assertion :Sound waves cannot travel in vacuum but light can travel in vacuum. Reason: Sound waves are longitudinal waves and they cannot be polarised but electromagnetic waves are transverse and they can be polarised.

Q. Sound waves are electromagnetic waves like light.

Q. Following statements which are true for light waves but not for sound waves are/is

(I) The speed of waves is greater in vacuum than in a medium
(II) Waves of different frequencies travel with different speeds in a medium
(III) Waves travel with different speeds in different media.

Q. Assertion :Sound waves do not travels through vacuum. Reason: The speed of sound is too small when compared to speed of light.

Q. Consider the following statement:
(a) Sound waves are longitudinal in nature.
(b) Sound waves cannot travel through vacuum.
(c) Sound waves are produced by oscillating charged particles only.
(d) Sound waves are electromagnetic waves.
Which of the following statements are correct ?

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