Physics Past Questions and Answers

When the length I of a piece of wire under constant tension is varied, the relationship of the frequency of the vibration f\(\alpha\)/ is

If an object is placed in front of two mirrors inclined at 90<sup style='font-size: smaller;'>o</sup>, how many images will be formed?

An object 3.0cm high is placed 60.0cm from a converging lens whose focal length is 20.0cm. Calculate the size of the image formed

A pool of water appears to be 1.0m deep when viewed vertically from above. If the refractive index of water is 1.33, what is the actual depth of the pool?

A ray of light is incident at an angle of 30<sup style='font-size: smaller;'>o</sup> on one top surface of a parallel-sided glass block of refractive index 1.5. The ray finally emerges from the lower surface. What is the angular deviation of the emergent ray?