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Explain the following term related to spherical lenses:- centres of curvature
A ray of light strikes a plane mirror at an angle of 40° to the mirror surface. What will be the angle of reflection?
When a spherical mirror is held towards the sun and its sharp image is formed on a piece of a carbon paper for some time, a hole is burnt in the carbon paper.
What name is given to the distance between spherical mirror and carbon paper?
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
- What will be the focal length of this mirror?
- Which type of spherical mirror will it provide?
- State whether this spherical mirror will diverge or converge light rays.
A 2.0 cm tall object is placed 40 cm from a diverging lens of focal length 15 cm. Find the position and size of the image.
State the direction of incident ray which after reflection from a spherical mirror gets reflected along its own path. Give a reason.
Explain the meaning of the terms focus and focal length in case of a convex mirror, with the help of suitable ray diagram.
For what position of object, the image formed by a concave mirror is magnified and erect?
An object is placed at a distance of 0.25 m
in front of a plane mirror. The distance between the object and image will be ______.
The distance from the center of curvature of the mirror to the pole is called the focal length of the mirror.
