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प्रश्न
Draw a ray diagram to show the formation of image of an object placed at the centre of curvature of a concave mirror. State the position, size and nature of the image.
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उत्तर
Object placed at C :
A real, inverted image of the same size is formed at the centre of curvature
Image formed
A ‘B’ is at C the centre of curvature.
Size is equal to the size of object AB.
It is inverted and real.
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संबंधित प्रश्न
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.
Copy this figure in your answer book and show the direction of the light ray after reflection:
The image formed by a concave mirror is real, inverted and highly diminished (much smaller than the object). The object must be:
(a) between pole and focus
(b) at focus
(c) at the centre of curvature
(d) at infinity
The angle of incidence for of light passing through the centre of curvature of a concave mirror is:
(a) 45°
(b) 90°
(c) 0°
(d) 180°
One of the following does not apply to a concave mirror this is:
(a) focal length is negative
(b) image distance can be positive or negative
(c) image distance is always positive
(d) height of image can be positive or negative
When an object is placed at a distance of 15 cm from a concave mirror, its image is formed at 10 cm in front of the mirror. Calculate the focal length of the mirror.
How can a concave mirror be used to obtain a virtual image of an object? Draw a diagram to illustrate your answer.
For a real object, which of the following can produce a real image?
______ mirrors make things look larger when objects are placed close to them.
The focal length of a concave mirror is 5cm. Its radius of curvature is ______.
