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प्रश्न
State where an object must be placed so that the image formed by a concave mirror is:
(b) at infinity.
(c) the same size as the object.
उत्तर
(a) an object must be placed Between pole and focus of the mirror so that the image formed by a concave mirror is erect and virtual.
(b) an object must be placed At the focus of the mirror so that the image formed by a concave mirror is at infinity.
(c) an object must be placed At the center of curvature of the mirror so that the image formed by a concave mirror is the same size as the object.
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संबंधित प्रश्न
A student wants to project the image of a candle flame on the walls of the school laboratory by using a mirror.
(a) Which type of mirror should he use and why?
(b) At what distance, in terms of focal length 'f' of the mirror, should he place the candle flame to get the magnified image on the wall?
(c) Draw a ray diagram to show the formation of the image in this case.
(d) Can he use this mirror to project a diminished image of the candle flame on the same wall? State 'how' if your answer is 'yes' and 'why not' if your answer is 'no.'
The image of a candle flame placed at a distance of 30 cm from a mirror is formed on a screen placed in front of the mirror at a distance of 60 cm from its pole. What is the nature of the mirror? Find its focal length. If the height of the flame is 2.4 cm, find the height of its image. State whether the image formed is erect or inverted
A ray of light is incident on a plane mirror making an angle of 90° with the mirror surface. The angle of reflection for this ray of light will be:
(a) 45°
(b) 90°
(c) 0°
(d) 60°
Find the focal length of a concave mirror whose radius of curvature is 32 cm.
If the focal length of a convex mirror is 25 cm, what is its radius of curvature?
Copy this figure in your answer book and show the direction of the light ray after reflection:
Describe the nature of image formed when the object is placed at a distance of 20 cm from a concave mirror of focal length 10 cm
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.
The mirror which can form a magnified image of an object is:
(a) convex mirror
(b) plane mirror
(c) concave mirror
(d) both convex and concave mirror
Examine the above figure and state which of the following option is correct? [one small box in the figure is equal to 1 cm]
