Sound : DPP for class 9th

Quiz by JR World

Sound

Question 1 of 59

A man sets his watch by the second of a siren placed at distance 1 km away. If the velocity of sound is 330 m/s

His watch is set 3 sec. faster

His watch is set 3 sec. slower

His watch is set correctly

None of the above

Good Try!
You Got out of answers correct!
That's