List of top Physics Questions on Waves and Oscillations asked in BHU UET

In a simple pendulum the breaking strength of the string is double the weight of the bob. The bob is released from rest when the string is horizontal. The string breaks when it makes an angle $ \theta $ With the vertical

Two pendulums of lengths 100 cm and 121 cm start vibrating. At some instant the two are at the mean position in the same phase. After how many vibrations of the longer pendulum will the two be in the same phase at the mean position again?

In case of a forced vibration, the resonance wave becomes very sharp when the