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प्रश्न
Name the kind of mirror used to obtain:
A virtual and diminished image
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उत्तर
Convex
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संबंधित प्रश्न
A 4 cm tall object is placed on the principal axis of a convex lens. The distance of the object from the optical centre of the lens is 12 cm and its sharp image is formed at a distance of 24 cm from it on a screen on the other side of the lens. If the object is now moved a little away from the lens, in which way (towards the lens or away from the lens) will he have to move the screen to get a sharp image of the object on it again? How will the magnification of the image be affected?
Explain the following term related to spherical lenses:- aperture
A concave lens produces an image 20 cm from the lens of an object placed 30 cm from the lens. The focal length of the lens is:
(a) 50 cm
(b) 40 cm
(c) 60 cm
(d) 30 cm
What is a spherical mirror?
Explain the meaning of the terms focus and focal length in case of a convex mirror, with the help of suitable ray diagram.
For what position of object, the image formed by a concave mirror is magnified and erect?
What is a mirror formula?
What is the focal length (f) of a mirror?
