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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
Find the focal length of a convex mirror whose radius of curvature is 32 cm.
No matter how far you stand from a mirror, your image appears erect. The mirror is likely to be ______.
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:
between F1 and the optical centre O of the lens.
Which of the above two cases shows the use of convex lens as a magnifying glass? Give reasons for your choice.
An object is placed at the following distance from a convex lens of focal length 15 cm:
(a) 35 cm
(b) 30 cm
(c) 20 cm
(d) 10 cm
Which position of the object will produce:
(i) a magnified real image?
(ii) a magnified virtual image?
(iii) a diminished real image?
(iv) an image of same size as the object?
The angle formed between the normal and the refracted ray is known as the angle of incidence.
The diagram given below in fig shows a ray of light AO falling on a surface separating two media. Draw the refracted ray in each, case.
A 5 cm tall object is placed perpendicular to the principle axis of a convex lens of focal length 12 cm. The distance of the object from the lens is 8 cm. Using the lens formula, find the position, size and nature of the image formed.
Nature of the images formed by a convex mirror is _______.
The mirror used as rear-view mirror in vehicles ______.
