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
Virtual image is formed due to
Converging beam of light rays
Parallel beam of light rays
Diverging beam of light rays
An image which cannot be produced on a screen is called a virtual image.
An instrument used in submarines to see objects on the surface of water, like ships is
Stethoscope
Microscope
Kaleidoscope
Periscope
The point, where all the reflected rays meet after reflecting from a cocave mirror is called
. Pole
Optic centre
Focus
Centre of curvature
Which of the following properties of light help us to see objects
Refraction
Reflection
Diffraction
Interference
Mirror which is used as reflector in head lights of vehicles
Concave
Convex
Plane
All the above
Objects which do not allow light through them are called
Transparent Objects
Opaque Objects
Luminous objects
Non Luminous Objects
The objects that can emit light and can act as source of light are called
Transparent Object
Opaque Object
The angle of incidence of a ray if the reflected ray is at an angle of 90° to the incident ray?
500
600
900
1800
According to the law of reflection
Angle of incidence > Angle of Reflection
Angle of incidence < Angle of Reflection
Angle of incidence = Angle of Reflection
No relation between Angle of incidence and Angle of Reflection