Embibe Experts Solutions for Chapter: Ray Optics, Exercise 1: Exercise 1

Focal length, radius of curvature and power of a plane mirror respectively are

The principle used in the transmission of signals through an optical fibre is

Optical fibers transmit light signals from one place to another place by

Numerical aperture of an optical fiber is a measure of

The phenomenon by which light travels in an optical fibres is

A ray of laser of a wavelength $630 \mathrm{nm}$ is incident at an angle of $30°$ at the diamond-air interface. It is going from diamond to air. The refractive index of diamond is $2.42$ and that of air is $1$. Choose the correct option.

Conditions for total internal reflection to occur are
a) The ray should travel from rarer to denser medium
b) The ray should travel from denser to rarer medium
c) The angle of incidence should be greater than the critical angle
d) The angle of incidence should be less than the critical angle

The minimum distance between object and it's real image formed by a convex lens is: