Glass, water, clear plastic and air are…………. materials.
a) transparent
b) translucent
c) opaque
d) none of these
Whenever light reflects, it obeys……….
a) principle of reflections
b) laws of reflections
c) laws of selections
d) none of these
The line perpendicular on the point of incident is called……..
a) incident ray
b) reflected ray
c) normal
d) none of these
Incident ray forms angle of incidence
with the normal.it is denoted by…….
a) i
b) r
c) n
d) y
The angle that reflected ray forms with the normal is called angle of …………. It is denoted by “r”.
a) incidence
b) reflection
c) both a and b
d) none of these
These objects reflect light.
a) translucent object
b) transparent object
c) rough opaque objects
d) shiny surface
