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प्रश्न
Define the following term in relation to concave mirror.
Principal axis
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उत्तर
An imaginary line passing through the pole and the centre of curvature of a spherical mirror is called principal axis.
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संबंधित प्रश्न
Explain the following term related to spherical lenses:- optical centre
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.
Why is a hole burnt in the carbon paper?
State the types of mirrors used for (i) headlights and (ii) rear view mirror, in cars and motorcycles. Give to justify your answer in each case.
What type of mirror can be used to obtain a real image of an object?
State the kind of mirror used
(a) By a dentist,
(b) As a search-light reflector.
A concave mirror forms a real image of an object placed in front of it at a distance 30 cm, of size three times the size of object. Find
- the focal length of mirror
- position of image.
Define the following term in relation to concave mirror.
Pole
Define the term Aperture.
If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?
