Tag: reflection of light and shadow

A broad stream of light is called a beam of light.
A beam is defined as a ray or stream of light or other radiation, as gamma rays, electrons, or subatomic particles.

When the rays of light starting from a point travel in various directions then collection of such rays is called divergent beam of light

If a parallel beam of light fall on a converging mirror or lens then they will also pass through focus i.e. all the rays will meet at a point of a convergent beam.

Lamp, tube light and CFL emit light radiation in visible spectrum when they glow. So they are the sources of light.

All the three statements are true that light is observed when switching on the torch, sunlight is observed in early morning and a beam of light can be observed through a hole.

Candle, sun and bulb emit light radiation when they glow, so they are the sources of light. But black body do not emit light and thus is is not a source of light.

Sun and moon are the natural sources of light whereas tube light and bulb are the man made sources of light.

Since in case of reflection or reflection of light rays, the image formation is the meeting/crossing of light ray's through a point.