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प्रश्न
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
State whether this spherical mirror will diverge or converge light rays.
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उत्तर
This spherical mirror will diverge the light rays.
संबंधित प्रश्न
Explain the following term related to spherical lenses:- optical centre
A student focused the Sun rays using an optical device 'X' on a screen S as shown.
From this it may be concluded that the device 'X' is a (select the correct option)
(A) Convex lens of focal length 10 cm.
(B) Convex lens of radius of curvature 20 cm.
(C) Convex lens of focal length 20 cm.
(D) Concave mirror of focal length 20 cm.
A virtual image larger than the object can be produced by a ______.
Define the Focal length of a spherical mirror
A ray of light is incident on a plane mirror at an angle of 30°. What is the angle of reflection
A ray of light is incident normally on a plane mirror. What will be the
angle of reflection?
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.
Name the two kinds of spherical mirrors and distinguish between them.
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).
State two uses of a concave mirror.
How will you distinguish between a plane mirror, a concave mirror and a convex mirror, without touching them?
Define the following term:
spherical mirror
What is the relationship between the focal length and radius of curvature?
Define focal length.
