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प्रश्न
Define the term Normal.
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उत्तर
Normal to the surface of a mirror at any point is the straight line at the right angle to the tangent drawn at that point.
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संबंधित प्रश्न
An image which can be obtained on a screen is called a ______ image.
What type of image is formed:
on a cinema screen?
Name the kind of mirror used to obtain
(a) a real and enlarged image
(b) a virtual and enlarged image
(c) a real and diminished image, and
(d) a virtual and diminished image.
Name the mirror which always produces an erect and virtual image. How is the size of image related to the size of object?
The erect image formed by a concave mirror is of size double the size of object. How are u and v related?
A concave mirror forms a virtual image of size twice that of the object placed at a distance 5 cm from it. Find:
- the focal length of the mirror
- position of image
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.
Is real image always inverted?
In torches, search lights and headlights of vehicles the bulb is placed ______.
