Optics Answers

Two mirrors are inclined at an angle of 45degrees and a point object is placed between the two mirrors.the number of images formed is

In Young's double slit experiment,a light of wavelength Is exposed to the slits which are separated by a distance d.analyze what change in the fringes will take place on the screen.will there any change be observed on the screen if one slit is closed?

How is the distance between interference fringes affected by the separation between the slits of Young experiment? Can visible light produce interference fringes? explain

The speed of light in air is 300, 000 km/s. What is the speed of light in glass if the refractive index of glass is 1.5

Using simple ray theory, describe the mechanism for the transmission of light within
an optical fiber. Briefly discuss with the aid of a suitable diagram what is meant by
the acceptance angle for an optical fiber. Show how this is related to the fiber
numerical aperture and the refractive indices for the fiber core and cladding.
An optical fiber has a numerical aperture of 0.20 and a cladding refractive index of
1.59. Determine:
(a) the acceptance angle for the fiber in water which has a refractive index of 1.33;
(b) the critical angle at the core–cladding interface.
Comment on any assumptions made about the fiber.

In a Michelson’s Interferometer 200 fringes cross the field of view when the movable mirror is displaced through 0.0589 mm. Calculate the wavelength of monochromatic light used.

A silica optical fibre has a core refractive index of 1.50 and a cladding refractive index of 1.45. Determine the critical angle at the core cladding interface. *