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The splash of sound was heard `5.35 s` after dropping a stone into a well 122.5 m deep. Velocity of sound in air isA. `350 cm//s`B. `350 m//s`C. `392 cm//s`D. `0 cm//s`

Answer» Correct Answer - B
`t=sqrt((2h)/(g))+(h)/(v_("sound"))`


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