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Question
Large ______ mirrors are used to concentrate sunlight to produce heat in solar furnaces.
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Solution
Large concave mirrors are used to concentrate sunlight to produce heat in solar furnaces.
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RELATED QUESTIONS
Name the type of mirror used in the following situation:
Headlights of a car
Support your answer with reason.
Which kind of mirror is used in the headlights of a car? Why is it used for this purpose?
- Draw ray-diagrams to show the formation of images when the object is placed in front of a concave mirror (converging mirror):
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- between its centre of curvature and focus.
Describe the nature, size and position of the image formed in each case.
- State one use of concave mirror based on the formation of image as in case (i) above.
The focal length of a small concave mirror is 2.5 cm. In order to use this concave mirror as a dentist's mirror, the distance of tooth from the mirror should be:
(a) 2.5 cm
(b) 1.5 cm
(c) 4.5 cm
(d) 3.5 cm
According to New Cartesian Sign Convention:
(a) focal length of concave mirror is positive and that of convex mirror is negative
(b) focal length of both concave and convex mirrors is positive
(c) focal length of both concave and convex mirrors is negative
(d) focal length of concave mirror is negative and that of convex mirror is positive
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?
A concave mirror cannot be used as:
(a) a magnifying mirror
(b) a torch reflector
(c) a dentist's mirror
(d) a real view mirror
Name the lens which can concentrate sun's rays to a point and burn a hole in a piece of paper.
Draw a ray diagram to show the formation of image of an object placed between the pole and focus of a concave mirror. State the position, size and nature of the image.
Name the mirror(s) that can give (i) an erect and enlarged image, (ii) same sized, inverted image
