Physics Past Questions and Answers

A pulse of a sound is transmitted from a ship and the reflection from the sea bed is recorded after 0.2s. Calculate the depth of the sea. [Take speed of sound in sea water = 1560ms^-1]

When two notes of nearly equal frequencies are sounded together, a periodic rise and fall in sound intensity can be heard. This phenomenon can be called

Which of the following instruments is not a wind instrument?

Which of the following actions will not cause an increase in the frequency of a vibrating string?

Which of the following items can be used to compare the relative magnitudes of electric charges on two bodies?