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प्रश्न
Define the terms focus and focal length of a concave mirror. Draw diagram to illustrate your answer.
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उत्तर
Focus of a concave mirror: The focus of a concave mirror is a point on the principal axis through which the light rays incident parallel to principal axis, pass after reflection from the mirror.
Focal length of a concave mirror: The distance of the focus from the pole of the concave mirror is called its focal length.
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संबंधित प्रश्न
We can obtain a real, enlarged and inverted image by a concave mirror.
A ray of light is incident normally on a plane mirror. What will be the:
- angle of incidence?
- angle of reflection?
What kind of mirror is required for obtaining a virtual image of the same size as the object?
What is the name of the phenomenon in which the right side of an object appears to be the left side of the image in a plane mirror?
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?
State the direction of incident ray which after reflection from a spherical mirror gets reflected along its own path. Give a reason.
Complete the following diagrams in Figure by drawing the reflected rays for the incident rays 1 and 2.
Define the following term in relation to concave mirror.
Principal focus
Name the type of mirror used in the following situation:
Side/rear-view mirror of a vehicle
Support your answer with reason.
