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प्रश्न
An object is placed at a distance of 10 cm from a concave mirror of focal length 20 cm.
State two characteristics of the image formed.
उत्तर
wo characteristics of the image formed is as follows:
(1) It is virtual and erect.
(2) It is magnified.
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संबंधित प्रश्न
List four characteristics of the images formed by plane mirrors.
A spherical mirror produces an image of magnification −1 on a screen placed at a distance of 40 cm from the mirror:
(i) Write the type of mirror.
(ii) What is the nature of the image formed?
(iii) How far is the object located from the mirror?
(iv) Draw the ray diagram to show the image formation in this case.
Make labelled ray diagrams to illustrate the formation of:
a real image by a converging mirror.
between its pole and focus
Describe the nature, size and position of the image formed in each case.
State one use of concave mirror bases on the formation of image as in case (i) above.
The real image formed by a concave mirror is smaller than the object if the object is:
(a) between centre of curvature and focus
(b) at a distance greater than radius of curvature
(c) at a distance equal to radius of curvature
(d) at a distance equal to focal length
If an object of 10 cm height is placed at a distance of 36 cm from a concave mirror of focal length 12 cm, find the position, nature and height of the image.
A converging mirror forms a real image of height 4 cm of an object of height 1 cm placed 20 cm away from the mirror:
(i) Calculate the image distance.
(ii) What is the focal length of the mirror?
Name the lens which can concentrate sun's rays to a point and burn a hole in a piece of paper.
If the radius of curvature of a concave mirror is 20 cm, its focal length is:
______ mirrors make things look larger when objects are placed close to them.
