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प्रश्न
Define the following term in relation to concave mirror.
Principal axis
उत्तर
An imaginary line passing through the pole and the centre of curvature of a spherical mirror is called principal axis.
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संबंधित प्रश्न
Explain the following term related to spherical lenses: focal length
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?
Figure shows a concave mirror with its pole at P, focus F and centre of curvature C. Draw ray diagram to show the formation of image of an object OA.
For what position of object, the image formed by a concave mirror is magnified and erect?
Name the kind of mirror used to obtain :
A real and enlarged image
Write the spherical mirror's formula and explain the meaning of each symbol used in it.
How will you distinguish between a plane mirror, a concave mirror and a convex mirror, without touching them?
Define the term Principle focus.
Assertion: Incident ray is directed towards the centre of curvature of spherical mirror. After reflection it retraces its path.
Reason: Angle of incidence (i) = Angle of reflection (r) = 0°
