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प्रश्न
Radius of curvature of a spherical mirror is ............. its focal length.
उत्तर
Radius of curvature of a spherical mirror is two times its focal length
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संबंधित प्रश्न
To construct a ray diagram we use two rays of light which are so chosen that it is easy to determine their directions after reflection from the mirror. Choose these two rays and state the path of these rays after reflection from a concave mirror. Use these two rays to find the nature and position of the image of an object placed at a distance of 15 cm from a concave mirror of focal length 10 cm.
A student wants to project the image of a candle flame on a screen 48 cm in front of a mirror by keeping the flame at a distance of 12 cm from its pole.
(a) Suggest the type of mirror he should use.
(b) Find the linear magnification of the image produced.
(c) How far is the image from its object?
(d) Draw ray diagram to show the image formation in this case.
Name the type of mirror used in the following situation:
Headlights of a car
Support your answer with reason.
Make labelled ray diagrams to illustrate the formation of:
a virtual image by a converging mirror.
Mark clearly the pole, focus, centre of curvature and position of object in each case.
At what distance from a concave mirror focal length 10 cm should an object 2 cm long be placed in order to get an erect image 6 cm tall?
To find the focal length of a concave mirror Rahul focuses a distant object with this mirror. The chosen object should be
(1) a tree
(2) a building
(3) a window
(4) the sun
______ is used as reflectors in torchlight.
The radius of curvature of a concave mirror whose focal length is 5cm is ______
An object at a distance of 30 cm from a
concave mirror gets its image at the same point. The focal length of the mirror is ______.
Write the uses of the concave mirror.
