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प्रश्न
Light travels in the same straight line path while passing through different media.
विकल्प
True
False
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उत्तर १
False.
उत्तर २
False.
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संबंधित प्रश्न
Define the radius of curvature of spherical mirrors.
A student obtains a blurred image of a distant object on a screen using a convex lens. To obtain a distinct image on the screen he should move the lens
(A) away from the screen
(B) towards the screen
(C) to a position very far away from the screen
(D) either towards or away from the screen depending upon the position of the object
Draw diagram to show the action of convex mirror on a beam of parallel light rays. Mark on this diagram principal axis, focus F, centre of curvature C, pole P and focal length f, of the convex mirror.
If a driver has one convex and one plane rear-view mirror, how would the images in each mirror appear different?
Two big mirrors A and B are fitted side by side on a wall. A man is standing at such a distance from the wall that he can see the erect image of his face in both the mirrors. When the man starts walking towards the mirrors, he find that the size of his face in mirror A goes on increasing but that in mirror B remains the same.
(a) mirror A is concave and mirror B is convex
(b) mirror A is plane and mirror B is concave
(c) mirror A is concave and mirror B is plane
(d) mirror A is convex and mirror B is concave
An object placed 20 cm in front of a mirror is found to have an image 15 cm (a) in front of it, (b) behind the mirror. Find the focal length of the mirror and the kind of mirror in each case.
State two uses of a convex mirror.
Nature of the images formed by a convex mirror is _______.
When the reflecting surface is curved outwards the mirror formed will be ______.
If the object is at infinity in front of a convex mirror the image is formed at infinity.
