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.
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
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
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?
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?
Which of the following is not due to total internal reflection?
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?
