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The absolute refractive indices of glass and water are 4/3 and 3/2 respectively
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1
|
917
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April 2, 2019
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List two possible ways in which a concave mirror can produce a magnified image
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1
|
5502
|
April 2, 2019
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Draw a ray diagram to show the path of the reflected ray corresponding to an incident ray
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1
|
13384
|
April 2, 2019
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“A ray of light incident on a rectangular glass slab immersed in any medium emerges parallel to itself.”
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1
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890
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April 2, 2019
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To construct ray diagram we use two light rays which are so chosen that it is easy to know
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1
|
523
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April 2, 2019
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What is the minimum number of rays required for locating the image formed by a concave mirror for an object?
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1
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919
|
April 2, 2019
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Draw a ray diagram to represent the nature, position and relative size of the image
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1
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1304
|
April 2, 2019
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An object is placed at a distance of 12 cm in front of a concave mirror
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1
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18478
|
April 2, 2019
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Draw a ray diagram to show the: (i) Position
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1
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719
|
April 2, 2019
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In what S.I. unit is the power of lenses stated? A convex lens has a focal length of 50 cm. Calculate its power
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1
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2443
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April 2, 2019
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Light enters from air into a glass plate which has a refractive index of 1.50. Calculate the speed of light in glass
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1
|
1338
|
April 2, 2019
|
|
With respect to air, the refractive indices of water and benzene are 1.33 and 1.50 respectively
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1
|
3765
|
April 2, 2019
|
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Draw the given diagram in your answer book and complete it for the path of ray of light beyond the lens
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1
|
2772
|
April 2, 2019
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Why does a ray of light bend when it travels from one medium into another?
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1
|
858
|
April 2, 2019
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Take down this figure into your answer book and complete the path of the ray
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1
|
506
|
April 2, 2019
|
|
A ray of light is incident on a convex mirror as shown
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1
|
502
|
April 2, 2019
|
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Where will the image be formed by a convex mirror if the object is placed between infinity and the pole of the mirror?
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1
|
467
|
April 2, 2019
|
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What are the values of (i) the angle of incidence
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1
|
525
|
April 2, 2019
|
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Where will the image be formed by a concave mirror when an object is placed between the pole
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1
|
577
|
April 2, 2019
|
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Rohit claims to have obtained an image twice the size of object with a concave lens. Is he correct? Give reason for your answer
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0
|
1731
|
March 17, 2018
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Suppose you have three concave mirrors A, B and C of focal lengths 10 cm, 15 cm and 20 cm
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0
|
16170
|
March 17, 2018
|
|
It is desired to obtain an erect image of an object, using concave mirror of focal length of 12 cm
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|
0
|
3477
|
March 17, 2018
|
|
Sudha finds out that sharp image of the window pane of her science laboratory is formed at a distance of 15 cm from the lens
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0
|
1018
|
March 17, 2018
|
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How is the refractive index of a medium related to the speed of light?
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0
|
13311
|
March 17, 2018
|
|
A pencil when dipped in water in a glass tumbler, appears to be bent at the interface of air and water
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0
|
794
|
March 17, 2018
|
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If the image formed by a mirror for all positions of the object placed in front of it is always erect and diminished, what type of mirror is it?
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0
|
19713
|
March 17, 2018
|
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Distinguish between a convex lens and a concave lens?
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0
|
6410
|
March 17, 2018
|
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Draw the following diagram, in which a ray of light is incident on a concave/convex mirror, on your answer sheet. Show the path of this ray, after reflection, in each case
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0
|
1844
|
March 17, 2018
|
|
A student wants to project the image of a candle flame on a screen 80 cm in front of a mirror by keeping the candle flame at a distance of 20 cm from its pole
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0
|
40608
|
March 17, 2018
|
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Draw a ray diagram to show the path of the reflected ray in each of the following cases. A ray of light incident on a convex mirror
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0
|
13987
|
March 17, 2018
|