Physics Past Questions and Answers

The functional difference between a lens and a mirror is that a lens

The diagram above illustrates an electromagnetic wave travelling with speed 3.0 x 10<sup style='font-size: smaller;'>8</sup>ms<sup style='font-size: smaller;'>-1</sup>. Calculate the wave length of the wave

A fish inside a pond appears to be at a depth of 1.5m when viewed vertically from above. The refractive index of the water in the pound is 1.3. Calculate the apparent displacement of the fish

an observer hears an echo 1.26 seconds after blowing a whistle near a cliff. calculate the distance of the observer from the cliff. [speed of sound in air = 330ms<sup style='font-size: smaller;'>-1</sup>]

An object is placed in front of two plane mirrors inclined at 60<sup style='font-size: smaller;'>o</sup> to each other. Determine the number of the images formed