Change in direction of a wave when it passes into a new substance
Reason it changes direction or bends is because each different substance has its own effect on speed of light.
Index of refraction- Equals the ratio of speed of light in a vacuum to the speed of light in a transparent substance. Determines the angle of bending of the light at the interface between two transparent substances.
A ray of light strikes the surface of a flat glass plate at an incident angle of 30(degree). The index of refraction of air and glass are 1.00 and 1.50, respectively. Determine the a) angle of reflection and b) angle of refraction.
The reflected ray follows the laws of specular reflection and so the angle of reflection is 30 degrees
A laser beam is incident on 2 slits separated by .500mm. The interference pattern is formed on a screen 1.00m from the slits & the 1 st fringe is found to be .120cm to the right of the central maximum. A) Calculate the wavelength of the light in nm & b) determine the maximum number of bright fringes that can be observed.