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संबंधित प्रश्न
A simple microscope is used by watch repairers. Give reason.
Explain the following term related to spherical lenses:- principal axis
What is the relation between the focal length and radius of curvature of a spherical mirror (concave mirror of convex mirror)? Calculate the focal length of a spherical mirror whose radius of curvature is 25 cm.
State the kind of mirror used
(a) by a dentist, and
(b) as a street light reflector.
The letters on the front of an ambulance are written laterally inverted like 
. Give reason.
(a) When a concave mirror is used as a shaving mirror, where is the person's face in relation to the focus of mirror?
(b) State three characteristics of the image seen in part (a).
Define the term Aperture.
The spherical mirror with a reflecting surface curved inward is called
In the figure shown, the image of a real object is formed at the point I. AB is the principal axis of the mirror. The mirror must be:
