Physics Past Questions and Answers

A trough 12.0cm deep is filled with water of refractive index \(\frac{4}{3}\). By how much would a coin at the bottom of the trough appear to be displaced when viewed vertically from above the water surface?

In a ray diagram for a thin converging lens, a ray that is not parallel to the optic axis but passes through the optic center will

Which of the following correctly, describes the image of an object, 4cm from a diverging lens of focal length 12cm?

Two tuning forks of frequency 256Hz and 260Hz are sounded close to each other. What is the frequency of the beats produced?

A man hears his echo from a nearby hill 2s after he shouted. If the frequency of his voice is 260Hz and the wavelength is 1.29m, how far away is the hill?