Advertisements
Advertisements
प्रश्न
Define the following term in relation to concave mirror.
Principal focus
Advertisements
उत्तर
It is a point on the principal axis, where a beam of light, parallel to the principal axis, after reflection actually meet.
APPEARS IN
संबंधित प्रश्न
What is a virtual image?
A ray of light strikes a plane mirror at an angle of 40° to the mirror surface. What will be the angle of reflection?
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
Which type of spherical mirror will it provide?
The diverging lens in part (a) is replaced by a converging lens also of focal length 100 mm. The object remains in the same position and an image is formed by the converging lens. Compare two properties of this image with those of the image formed by the diverging lens in part (a).
State the direction of incident ray which after reflection from a spherical mirror gets reflected along its own path. Give a reason.
State the two convenient rays that are chosen to construct the image by a spherical mirror for a given object? Explain your answer with the help of suitable ray diagrams.
Which mirror will you prefer to use as a rear view mirror in a car : plane mirror or convex mirror? Give one reason.
Define the following term in relation to concave mirror.
Principal axis
