The point, where all the reflected rays meet after reflecting from a cocave mirror is called
. Pole
Optic centre
Focus
Centre of curvature
Substances which allow light partially through them are called
Transparent Objects
Translucent Objects
Luminous objects
Non Luminous Objects
An instrument used in submarines to see objects on the surface of water, like ships is
Stethoscope
Microscope
Kaleidoscope
Periscope
Velocity of light is least in
Water
Glass
Air
Vacuum
The objects that can emit light and can act as source of light are called
Transparent Object
Opaque Object
The geometric centre of a spherical mirror is called its
Principal axis
Pole
Which of the following show regular reflection?
Rock
Wood
Wall
Who proposed corpuscular theory of light?
Einstein
Darwin
Newton
Bohr
Which of the following properties of light help us to see objects
Refraction
Reflection
Diffraction
Interference
The relation between u, v and f is
1/u - 1/v = 1/f
1/v – 1/u = 1/f
1/v + 1/u = 1/f
1/vu = 1/f
