Question 4
Sound travels in air if

(a) particles of medium travel from one place to another
(b) there is no moisture in the atmosphere
(c) disturbance moves
(d) both particles as well as disturbance travel from one place to another

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Solution

(c) disturbance moves

Particles does not travel from one place to another. It’s the disturbance which travel from one point to another.

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Sound travels in air :

(a) if particles of medium travel from one place to another

(b) if there is no moisture in the atmosphere

(d) if both, particles as well as disturbance move from one place to another

What are the characteristics of longitudinal waves? Do particles travel from one place to another place? Is sound is a longitudinal wave?

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