When the earth comes in between the sun and moon, the eclipse formed is:
Solar eclipse
Lunar eclipse
Partial lunar eclipse
None of these
A glowing electric bulb is an example for:
Point source of light
Extended source of light
Ray of light
What occurs when the tip of the umbra falls on the earth?
Partial solar eclipse
Annular solar eclipse
Rays of light always travel in a straight line.This phenomenon is called:
Total internal reflection
Rectilinear propagation
Scattering of light
