when a train arriving at a railway platform approaches a person standing on the platform,the noise produced by the engine increases.the phenomenon is governed by
a) kundt's Rule
b) Law of Tension
c) Law of Mass
d) Doppler's Effect
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d) Doppler's effect is the right answer
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When a train arriving at a railway platform approaches a person standing on the platform,the noise produced by the engine increases.the phenomenon is governed by Doppler's Effect.
Dopplers Effect can be defined as the change in frequency of a wave(light/sound,etc.) as the distance between the source and the observer reduces.
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