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प्रश्न
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
What will be the focal length of this mirror?
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उत्तर
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संबंधित प्रश्न
Explain the following term related to spherical lenses: focal length
What is the name of the phenomenon in which the right side of an object appears to be the left side of the image in a plane mirror?
When a spherical mirror is held towards the sun and its sharp image is formed on a piece of a carbon paper for some time, a hole is burnt in the carbon paper.
What is the advantage of using a carbon paper rather than a white paper?
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
How is the focal length of a spherical mirror related to its radius of curvature?
What is meant by magnification? Write its expression. What is its sign for the (a) real (b) virtual, image?
Select the correct option:
Which mirror is used in periscope?
Define the following term in relation to concave mirror.
Principal focus
Which of the following has curved reflecting surface?
The spherical mirror with a reflecting surface curved inward is called
The spherical mirror used as a rear view mirror in the vehicle is
An object is placed at a distance of 0.25 m
in front of a plane mirror. The distance between the object and image will be ______.
Spherical mirrors are one form of ______ mirrors.
