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प्रश्न
State the kind of mirror used
(a) by a dentist, and
(b) as a street light reflector.
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उत्तर
(a) A dentist uses CONCAVE MIRROR.
(b) Convex mirror
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संबंधित प्रश्न
Name the spherical mirror which can produce a real and diminished image of an object.
A ray of light travels from a denser medium to a rarer medium. How will it bend?
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
The magnification for a mirror is -3. How are u and v related?
Define the following term:
concave mirror
Define the term Aperture.
The following Figure shows a concave mirror MM' on which a ray of light incident from a point P gets reflected to meet the principle axis at O.
(a) Find, by construction, the position of the centre of curvature of the concave mirror.
(b) Write down the value for the radius of curvature of the mirror.
(c) Calculate the focal length of the mirror.
(d ) Which relation is used in deducing the focal length from the radius of curvature?
If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?
