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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
An object is placed at a long distance in front of a convex mirror of radius of curvature 30 cm. State the position of its image.
A man standing in front of a special mirror finds his image having a very small head, a fat body and legs of normal size. What is the shape of:
(a) top part of the mirror?
(b) middle part of the mirror?
(c) bottom part of the mirror?
Give reasons for your choice.
Name two factors on which the focal length of a lens depends.
An object is placed well outside the principal focus of a convex lens. Draw a ray diagram to show how the image is formed, and say whether the image is real or virtual.
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?
Write true or false
The focal length of a convex mirror is equal to its radius of curvature.
A convex mirror is used
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 nature of image formed by a convex mirror when the object distance from the mirror is less than the distance between pole and focal point (F) of the mirror would be ______.
What do you observe when an object is placed anywhere between P and infinity in front of a convex mirror?
