Optics Answers

A small object is placed 20 cm in front of a block of glass 10 cm thick and its farther side silvered.The image is formed 22 cm behind the silvered face.Find refractive index of glass.
options are :
(1) 1.15
(2) 1.25
(3) 1.67
(4) 1.1

How does Fraunhoffer diffraction pattern due to a single slit differ from that of a circular
aperture?

Discuss, with necessary theory, how is double slit interference pattern affected when a
thin glass plate is introduced in the path of one of the interfering beams?

Starting from Maxwell’s field equations in free space, derive wave equation

what is difference between bifocal lens and double focal lens?

The refractive index of glass with respect to water is 3/2 and the refractive index of water with respect to air is 4/3.Then what will be the refractive index of water with respect to glass?

How to relate a phase diffrence and path diffrence

In Young’s double slit experiment the separation between the slits is d and the wavelength of light used is 6000°A. If the angular width of the interference fringe formed at distant screen is 1° then the value of d is :
a)1mm b)0.05mm c)0.03mm d)0.01mm

will higher frequency eject more electron than lower frequency?

at what distance shuold an object be placed in front of convex lens of focal lenght 20 cm to obtain an image of double its size?