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प्रश्न
Name the spherical mirror which has:
(a) virtual principal focus.
(b) real principal focus.
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उत्तर
The spherical mirror which has
(a) a virtual principal focus is a convex mirror
(b) a real principal focus is a concave mirror
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संबंधित प्रश्न
An image formed by a ______ mirror is always of the same size as that of the object.
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Give one use each of a concave and a convex mirror.
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All the distances are measured from the .......... of a spherical mirror.
Write true or false
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(i) Pole
(ii) Centre of curvature
(iii) Radius of curvature
(iv) Principal axis
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Center of curvature
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Define focal length.
A student traces the path of a ray of light passing through a rectangular slab.
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For measuring the angle of incidence, he must position the protractor in the manner shown in the figure:
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 ______.
The radius of curvature of a spherical mirror is 18 cm. What is the focal length of this mirror?
