Optics Answers

To calculate the angle of diffraction for red colour(λ=8000 angstrom)in the first order of spectrum for a grating with 14438 lines per inch.

Please explain pulse dispersion in step-index fibre. If the core and cladding refractive indices for a step-index fibre are 1.47 and 1.46 respectively, calculate the broadening of a pulse after a distance of 5 km.

a ray of light passes from air through a rectangular block of glass with parallel faces 6.5cm apart at an angle of incidence 35 degrees. calculate:
a) the angle of refraction
b) the lateral displacement

Solving\\(x^{2})=3\\

A glass-wedge with the angle of wedge of 30 seconds of an arc is formed With a liquid of

R.1. 1.47. Find the number of dark interterence fringes per cm of the wedge length.

a beam of light travelling in air strikes a glass table top at an angle of 44.5 degrees and the glass has an index of refraction of 1.5.
what us the angle of refraction for the light transmitted into the glass

A thin equivalent lens is placed on a horizontal plane mirror and a pin held 20cm vertically above the lens coincise in position with its own image. The image between the under surface of the lens and the mirror is spilled with water (refractive index 1.33), then to coincise with its image, the pin had to be raised until its distance from the lens is 27.5cm. Find the radius of the curvature of the surface of the lens.

the bottom of 2 metre deep water tank has a gold ring there by what distance would the ring appear to be raised when viewed by a person from the top of the tank

A parallel beam of light falls normally on one phase of a small angled glass
prism. Part of the beam is refracted at the second phase and is deviated
through an angle of 1.8o. Another part is reflected at the second phase and
emerges at the first making an angle of 9.2o with the normal. Calculate:
(i) The refractive index of the glass.
(ii) The angle of the prism.

Two thin(small angled)prism are combined to produce dispersion without deviation. One prism has angle 5A^° and refractive index 1.56.if the other prism has refractive index 1.7,what is its angle?