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[" 125.A source of sound emits waves wit...

[" 125.A source of sound emits waves with frequency "f" Hz and "],[" speed."(y)/(m)/s" .Two observers move away from this source in "],[" opposite directions each with a speed "0.2" v relative to the "],[" source.The ratio of frequencies heard by the two observers "],[" will be "],[[" (a) "3:2," (b) "2:3],[" (c) "1:1," (d) "4*10]]

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