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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:- optical centre
Define the following term in the context of spherical mirrors:- Centre of curvature
Explain the following term related to spherical lenses:- centres of curvature
Name the kind of mirror used to obtain
(a) a real and enlarged image
(b) a virtual and enlarged image
(c) a real and diminished image, and
(d) a virtual and diminished image.
Define the term Aperture.
The spherical mirror used in a beauty parlour as make-up mirror is _______.
Numerical problem.
The radius of curvature of a spherical mirror is 25 cm. Find its focal length.
