Optics Answers

A light ray of angle of incidence 40° emerged from prism in minimum deviation position.The what is the angle of incidence on the second surface?

A particle moves towards a concave mirror of focal length 30 c m along its acis and with a constant speed of 4 cm/s what is the speed of its Image when the particle is at 90 cm from the mirror

The question says that a convex lens with focal length 'F' is cut along the principal axis and the cut parts are arranged with both their pointed ends up(they are touching each other) and in the second case, one pointed end up and the other down. We have been asked to find the focal length in both cases. Please advise how to solve it.

The angle of minimum deviation for a 75° prism of dense glass is found to be 45° when in air and 15° when immersed in certain liquid. The refractive index of the liquid is

why it is necessary to use a telescope to observe fringe pattern in a michelson interferometer but a microscope is needed to observe the newton ring

a nicol prism as well as a tourmaline plate produce plane polarized light. what is the difference between the actions of these two?

Explain the concept of modulation and its need in long distance communication. What is difference
between amplitude modulation and frequency modulation?

An equiconvex lens (of refractive index 1.5) is placed in contact with plane mirror as shown in the
figure. A small needle with its tip on the principal axis is moved along the axis until its inverted
image is found at the position of the needle. The distance of the needle from the lens is measured
to be 30 cm. Now a few drops of a liquid are put in between the lens and the plane mirror and the
new position of the image is located to be at 4.5 cm. Calculate the refractive index of the liquid.