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प्रश्न
At the point of incidence, a line drawn at right angles to the surface, separating the two media, is called the normal.
विकल्प
True
False
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उत्तर
True.
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संबंधित प्रश्न
Which mirror has a wider field of view?
A boy is standing in front of and close to a special mirror. He finds the image of his head bigger than normal, the middle part of his body of the same size, and his legs smaller than normal. The special mirror is made up of three types of mirrors in the following order from top downwards:
(a) Convex, Plane, Concave
(b) Plane, Convex, Concave
(c) Concave, Plane, Convex
(d) Convex, Concave, Plane
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,
- between F₁ and the optical centre O of the lens.
Which of the above two cases shows the use of a convex lens as a magnifying glass? Give reasons for your choice.
Light travels in the same straight line path while passing through different media.
Why are the mirrors fitted on the outside of cars convex?
When the reflecting surface is curved outwards the mirror formed will be ______.
Numerical problem.
A concave mirror produces three times magnified real image of an object placed at 7 cm in front of it. Where is the image located? (Ans: 21 cm in front of the mirror)
The image formed by a convex mirror is always ______.
The field of view is maximum for ______.
