Optics Answers

Refraction of a plane wave at the interface between two dielectrics.

Reflection of a plane wave at the interface between two dielectrics.

Find out the ratio of velocities of the given signal in the core and cladding if the refractive indices are 1.5 and 1.48 respectively

An optical fiber whose core refractive index is 1.5 and refractive index of cladding is 1.47.Determine

1) the critical angle at the core cladding interface

2) the numerical aperture

3) the acceptance angle

What is reflection.

Given the dimensions of the reduced eye , the

diameter fovea ab = 0.3mm. view distance nB= nA=2.05

meters, na = nb = 1.5cm, calculate the object size for an image

filling the fovea.Pay attention to unit 1m=100cm=1000mm;

What is malus law?

Consider gallium arsenide at T=300 K, assume the photon intensity at a particular point is I(x)=

0.05 W/cm2 at a wavelength of 0.75 m. The absorption coefficient at this wavelength is 0.9x104

cm-1

.

(a) Calculate the generation rate of electron hole pairs.

(b) Calculate the steady state excess concentration of electrons if the minority carrier (hole)

life time is 10-7

sec.

How does the Intensity of a Light source vary with Distance? What is a unique experiment to prove this theory other then the flashlight and laser pointer experiment?

The surface of a concave mirror is pointed towards a flashlight. Light from the flashlight hits the mirror and converges to a point. How far is this converging point from the mirrors surface if the radius of curvature (C) of the mirror is 250cm?