Physics Past Questions and Answers

A converging lens of focal length 5cm forms a virtual image which is 10cm from the lens. How far from the lens is the object?

Which of the following instruments produces sound by the vibration of air column?

The walls and ceilings of many standard auditoria are covered with perforated pads to

A string of length 1.0 m vibrates in 10 loops. If the total mass of the string is 1.0 x 10^-3 kg and the tension in it is 10N, calculate the frequency of the vibration.

The distance between two successive crests of a water is 1m. lf a particle on the surface of the water makes two complete vertical oscillations in 1 second, calculate the speed of the wave