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प्रश्न
An object is placed in front of a concave mirror as shown in the following figure. By scale drawing, find the nature of the image. Given f = 10 cm, v = 30 cm.

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उत्तर
Focal length o f concave mirror= 10 cm. Object distance = 30 cm.

The image is real, inverted, and diminished.
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संबंधित प्रश्न
Explain the following term related to spherical lenses:- optical centre
We can obtain a real, enlarged and inverted image by a concave mirror.
What is a spherical mirror?
An optical device has been given to a student and he determines its focal length by focusing the image of the sun on a screen placed 24 cm from the device on the same side as the sun. Select the correct statement about the device.
(A) Convex mirror of focal length 12 cm
(B) Convex lens of focal length 24 cm
(C) Concave mirror of focal length 24 cm
(D) Convex lens of focal length 12 cm
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- the focal length of the mirror
- position of image
Draw a ray diagram to show the formation of the image, when the object is placed between optical centre and principal focus of a convex lens.
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An object forms a virtual image which is 1/8th of the size of the object. If the object is placed at a distance of 40 cm from the convex mirror, calculate:
- the position of the image
- the focal length of the convex mirror.
In the following figure shows a concave mirror with its pole (P), focus (F) and centre of curvature (C). Draw a ray diagram to show the formation of the image of an object AB by the concave mirror.

