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प्रश्न
A ray of light passing through centre of curvature of a spherical mirror, after reflection
विकल्प
passes through the focus
passes through the pole
becomes parallel to the principal axis
retraces its own path.
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उत्तर
retraces its own path.
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संबंधित प्रश्न
Explain with a suitable diagram, how a concave mirror converges a parallel beam of light rays. Mark clearly the pole, focus and centre of curvature of concave mirror in this diagram.
A diverging mirror is
(a) a plane mirror
(b) a convex mirror
(c) a concave mirror
(d) a shaving mirror
What is the nature of a mirror having a focal length of, +10 cm?
If a driver has one convex and one plane rear-view mirror, how would the images in each mirror appear different?
Name two factors on which the focal length of a lens depends.
Draw ray diagrams to represent the nature, position and relative size of the image formed by a convex lens for the object placed:
at 2F1,
Draw ray diagrams to represent the nature, position and relative size of the image formed by a convex lens for the object placed:
between F1 and the optical centre O of the lens.
Which of the above two cases shows the use of convex lens as a magnifying glass? Give reasons for your choice.
Write true or false
At the point of incidence, a line drawn at right angles to the surface, separating the two media, is called the normal.
A .............. mirror is obtained on silvering the outer surface of a part of a hollow glass sphere.
The diagram given below in fig shows a ray of light AO falling on a surface separating two media. Draw the refracted ray in each, case.
