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प्रश्न
What do you mean by the term dispersion?
उत्तर
The splitting or breaking up of the white light into its constituent colours as it passes through a refracting medium such as prism is known as dispersion
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संबंधित प्रश्न
A ray of light is incident normally on a plane mirror. What will be the
angle of incidence?
Write true or false
A virtual image formed by a spherical mirror is always erect and situated behind the mirror.
A ray of light travels from a denser medium to a rarer medium. How will it bend?
State the kind of mirror used
(a) by a dentist, and
(b) as a street light reflector.
At what distance from a concave mirror of focal length 25 cm should an object be placed so that the size of image is equal to the size of the object.
An object 10 cm high is placed at a distance of 20 cm in front of a spherical mirror of focal length 25 cm. By scale drawing find the nature, position, and magnification of the image in the following case:
Concave mirror
Size of image of an object by a mirror having a focal length of 20 cm is observed to be reduced to 1/3rd of its size. At what distance the object has been placed from the mirror? What is the nature of the image and the mirror?
What is the difference between virtual images of an object formed by a concave mirror and a convex mirror?
