Sunbeams streaming through the windows of classroom are visible because dust particles in air ……light into our eyes.
a) absorb
b) transmit
c) disperse
d) reflect
Light from a cinema projector on its way to the screen are visible because dust particles in air ……light into our eyes.
a) absorb
b) transmit
c) disperse
d) reflect
Explanation:A projector or image projector is an optical device that projects an image (or moving images) onto a surface, commonly a projection screen. Most projectors create an image by shining a light through a small transparent lens, but some newer types of projectors can project the image directly, by using lasers.
Law of Reflection:
The laws of reflection are as follows: The incident ray, the
reflected ray and the normal to the reflection surface at the point of the
incidence lie in the same plane. The angle which the incident ray makes with
the normal is equal to the angle which the reflected ray makes to the same
normal.
The
ray coming from the source towards the surface is called…….
a) incident ray
b)
reflected ray
c) dispersed ray
d) absorbed ray
The ray which bounces off the surface is called
a) incident ray
b) reflected ray
c) dispersed ray
d) absorbed ray
The point at which the incident ray strikes the reflecting surface is called……..
a)point of incidence
b)normal
c) point of reflection
d) point of reflection
