an echo is heard on a day when temperature is about 22 C . will the echo be heard sooner or latre if the temperature falls to 4 C.
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Echo will be heard sooner than the echo heard when temperature was 22°C.
Because speed of sound increases with increase in temperature.
Also, speed or sound in air =Distance/time
i.e. If speed of sound increases, then time after which the echo will be heard decreases.
Because speed of sound increases with increase in temperature.
Also, speed or sound in air =Distance/time
i.e. If speed of sound increases, then time after which the echo will be heard decreases.
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