Optics Answers

the image of a crayon appears to be 22.8 cm behind the surface of a convex mirror and is 3.38 cm tall. The mirrors focal length is 51.2 cm (a) how far in front of the mirror is the crayon positioned?

(THE FOCAL LENGTH OF THE EYEPIECE OF A CERTAIN MICROSCOPE IS 18.0MMTHE FOCAL LENGTH OF 19.7CMTHE FINAL IMAGE FORMED BY THE EYEPIECE IS AT INFINITYTREAT ALL LENAES THIN A WHAT IS A DISTANCE FROM THE OBJECTIVE TO THE OBJECT BEGIN VIEWED B WHAT IS THE MAGNITUDE OF LINEAR MAGNIFICATION PRODUCED BY THE OBJECTIVE C WHAT IS THE OVERALL ANGULAR MAGNIFICATION OF MICROSCOPE)

You want to use a right angle prism to reflect light, as part of a periscope. What materials would you use for the prism? (choose from air (n=1), water (n=1.3), Glass (n=1.5), or diamond (n=2.2)). Why are prisms rather than mirrors involved in many optical devices?

A ray of light hits a glass pane with 60o angle of incidence. The pane is 5 mm thick, with index of refraction 1.54. Light is reflected by a mirror that is in contact with the back of the pane. By how much is the beam laterally displaced with respect to the return path if the pane is removed?

A tube of 20 cm length filled with a solution of 15 gm of cane

sugar in 100 cc of water is placed in the path of a polarized light. Find the angle of rotation of the

plane of polarization if the specific rotation of cane sugar is 65°.

describe michelson morley experiment with the help of heat diagram and discuss it's negative result.

the magnifying glass is made of lenses of power +20D and -4D. if distance of distinct vision is 25cm. calculate the size of an object 2cm high seen through the magnifying glass

An unpolarized light wave passes through two (2) polarizers whose planes of polarization are 90 degrees apart. We therefore observe that there is no light passing through the 2nd polarizer.


Now we insert a 3rd polarizer between the two polarizers above. You vary the polarization plane of the 3rd polarizer by making it make a full 360-degree turn while observing the light passing through the 3 polarizers. You observe then, that there are 4 angles for which the outgoing light is maximum.


Determine these angles based on the angle of the 1st polarizer, and explain why we observe such maximums.

In an optical fiber, the core material has a refractive index 1.6 and refractive index of cladding material is 1.3. calculate the value of acceptance angle.

Why observable interference fringe pattern cannot be obtained by using two incoherent

sources in an interference experiment? Justify your answer.