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प्रश्न
Name the type of mirror having a focal length of +20 cm.
एका वाक्यात उत्तर
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उत्तर
The mirror having +20 cm as its focal length is a convex mirror because the focal length is taken positive only in case of a convex mirror.
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संबंधित प्रश्न
Define the following term in the context of spherical mirrors:- Centre of curvature
A coin placed at the bottom of a vessel appears to be raised when water is poured in the vessel.
Explain the following terms :
Pole, Centre of curvature, Radius of curvature, Principal axis. Show them on separate diagrams for each of the concave and convex mirrors.
Discuss the position and nature of image formed by a concave mirror when an object is moved from infinity towards the pole of mirror.
State the kind of mirror used
(a) By a dentist,
(b) As a search-light reflector.
What do you mean by a spherical mirror?
Distinguish between real and virtual images.
What is the nature of a mirror having a focal length of +15 cm?
Define the radius of curvature.
What is “aperture”?
