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
The image formed by a plane mirror is
Real
Virtual
Inverted
No image formation
Which of the following properties of light help us to see objects
Refraction
Reflection
Diffraction
Interference
The velocity of light in vacuum is
2x108 m/s
3x108 m/s
4x108 m/s
5x108 m/s
Who proposed corpuscular theory of light?
Einstein
Darwin
Newton
Bohr
Which of the following show regular reflection?
Rock
Wood
Glass
Wall
An instrument used in submarines to see objects on the surface of water, like ships is
Stethoscope
Microscope
Kaleidoscope
Periscope
Substances which allow light partially through them are called
Transparent Objects
Translucent Objects
Luminous objects
Non Luminous Objects
Angle of incidence is equal to the angle of refraction
Always
Sometimes
Under special conditions
Never
Mirror which is used as reflector in head lights of vehicles
Concave
Convex
Plane
All the above
