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प्रश्न
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?
उत्तर
The distance between the mirror and the carbon paper is the focal length.
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संबंधित प्रश्न
State the two kinds of spherical mirror and distinguish them with the aid of proper diagrams.
A student obtained a sharp image of a burning candle, placed at the farther end of a laboratory table, on a screen using a concave mirror. For getting better value of focal length of the mirror, the subject teacher suggested him for focusing a well illuminated distant object. What should the student do?
(A) He should move the mirror away from the screen.
(B) He should move the mirror slightly towards the screen.
(C) He should move the mirror as well as the screen towards the newly selected object.
(D) He should move only the screen towards the newly selected object.
In each case (a) and (b), draw reflected rays for the given incident rays and mark focus by the symbol F.
(a) When a concave mirror is used as a shaving mirror, where is the person's face in relation to the focus of mirror?
(b) State three characteristics of the image seen in part (a).
A real and enlarged image can be obtained by using a
The erect image formed by a concave mirror is of size double the size of object. How are u and v related?
The spherical mirror with a reflecting surface curved inward is called
Define the radius of curvature.
