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प्रश्न
State the kind of mirror used
(a) by a dentist, and
(b) as a street light reflector.
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उत्तर
(a) A dentist uses CONCAVE MIRROR.
(b) Convex mirror
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संबंधित प्रश्न
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 ______.
A ray of light is incident normally on a plane mirror. 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 is the advantage of using a carbon paper rather than a white paper?
How is a spherical mirror used to diverge a beam of light from a point? Name the type of mirror used.
Name the kind of mirror used to obtain:
A virtual and diminished image
State two uses of a concave mirror.
An object 5 cm high is placed at a distance 60 cm in front of a concave mirror of focal length 10 cm. Find the position and size of the image.
