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प्रश्न
State the direction of incident ray which after reflection from a spherical mirror gets reflected along its own path. Give a reason.
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उत्तर
A ray passing through THE CENTRE OF CURVATURE is incident normally on the spherical mirror, gets reflected back along its own path.
A ray passing through the centre of curvature.
It is because the ray is normal to the spherical mirror,
Hence ∠i=0, i.e., the angle of incidence is 0
Therefore, the angle of reflection ∠r=0.
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संबंधित प्रश्न
Match the items given in Column I with one or more items of Column II.
| Column I | Column II | ||
| (a) | A plane mirror | (i) | Used as a magnifying glass. |
| (b) | A convex mirror | (ii) | Can form image of objects spread over a large area. |
| (c) | A convex lens | (iii) | Used by dentists to see enlarged image of teeth. |
| (d) | A concave mirror | (iv) | The image is always inverted and magnified. |
| (e) | A concave lens | (v) | The image is erect and of the same size as the object. |
| (vi) | The image is erect and smaller in size than the object. |
Define (a) centre of curvature (b) radius of curvature (c) pole (d) principal axis, and (e) aperture, of a spherical mirror with the help of a labelled diagram
Name the spherical mirror which can produce a real and diminished image of an object.
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
Name the kind of mirror used to obtain:
A virtual and diminished image
Select the correct option:
Which mirror is used in periscope?
Define the following term in relation to concave mirror.
Focal length
If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?
Spherical mirrors are one form of ______ mirrors.
