Two plane mirrors are inclined at 70°. A ray incident on one mirror at angle ϴ after reflection falls on second mirror and is reflected from there parallel to first mirror. The value of is
A beam of light from a source L is incident normally on a plane mirror fixed at a certain distance x from the source. The beam is reflected back as a spot on a scale placed just above the source I. When the mirror is rotated through a small angle 0, the spot of the light is found to move through a distance y on the scale. The angle ϴ is given by.
In total internal reflection when the angle of incidence is equal to the critical angle for the pair of media in contact, what will be angle of refraction?
A ray of light travelling in a transparent medium of refractive index µ, falls on a surface separating the medium from air at an angle of incidence of 45°. For which of the following value of µ the ray can undergo total internal reflection?
Ray optics is valid, when characteristic dimensions area
A person is six feet tall. How tall must a vertical mirror be if he is able to see his entire length?
The frequency of a light wave in a material is 2 × 〖10〗^14 Hz and wavelength is 5000 Å. The refractive index of material will be
If two mirrors are kept inclined at 60° to each other and a body is placed at the middle, then total number of images formed is
Which of the following is not due to total internal reflection?