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You are given two converging lenses of focal length 1.25 cm
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2
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8237
|
February 18, 2017
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A concave mirror of small aperture forms a sharper image. Why?
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0
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6691
|
December 12, 2016
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Suppose while sitting in a parked car
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1
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9029
|
December 12, 2016
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When monochromatic light travels from a rarer to a denser medium, explain the following, giving reasons
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1
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4264
|
December 12, 2016
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You have learnt that plane and convex mirrors produce virtual images of objects. Can they produce real images under some circumstances? Explain
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1
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6290
|
December 12, 2016
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|
The image obtained with a convex lens is erect
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1
|
3905
|
December 12, 2016
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A convex lens of focal length 30 cm is placed coaxially with a convex mirror of radius of curvature 20 cm
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1
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4344
|
December 12, 2016
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|
Figure shows an equiconvex lens
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1
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7546
|
December 12, 2016
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A screen is placed 90 cm from an object
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1
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2826
|
December 12, 2016
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|
The near vision of an average person is 25 cm
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1
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3879
|
December 12, 2016
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|
You are given prisms made of crown glass and flint glass with a wide variety of angles
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1
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2903
|
December 12, 2016
|
|
A man with normal near point (25 cm) reads a book with small print using a magnifying glass
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1
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7279
|
December 12, 2016
|
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A small telescope has an objective lens of focal length 140 cm
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1
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5041
|
December 12, 2016
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An astronomical telescope uses two lenses of power 10 D and ID. What is its magnifying power in normal adjustment?
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0
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3631
|
December 12, 2016
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The objective of an astronomical telescope
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1
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2666
|
December 12, 2016
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How is the working of telescope different
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1
|
2367
|
December 12, 2016
|
|
A compound microscope consists of an objective of focal length
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1
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6350
|
September 8, 2016
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Two convex lenses of same focal length but of apertures
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1
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2861
|
September 8, 2016
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Draw a schematic diagram
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1
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1616
|
September 8, 2016
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Draw a ray diagram to show refraction of a ray of monochromatic light passing through a glass prism
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1
|
12991
|
September 8, 2016
|
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Plot a graph to show variation of the angle of deviation as a function of angle of incidence for light passing through a prism
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1
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18392
|
September 8, 2016
|
|
A ray PQ is incident normally on the face AB of a triangular prism of refracting angle of 60°
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1
|
13468
|
September 8, 2016
|
|
Two monochromatic rays of light are incident normally on face AB
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1
|
3966
|
September 8, 2016
|
|
Two monochromatic rays of light are incident normally on the face AB
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|
1
|
1836
|
September 8, 2016
|
|
A ray PQ incident normally on the refracting face
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1
|
16006
|
September 8, 2016
|
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Write the relationship between angle of incidence T, angle of prism 'A' and angle of minimum deviation for triangular prism
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0
|
2129
|
September 8, 2016
|
|
Derive the mathematical relation between
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1
|
7334
|
September 8, 2016
|
|
Calculate the distance of an object of height h from a concave mirror of radius of curvature 20 cm
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1
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11648
|
September 8, 2016
|
|
An object AB is kept in front of a concave mirror as shown in the figure
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|
1
|
7367
|
September 8, 2016
|
|
A convex lens is placed over a plane mirror
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|
1
|
4732
|
September 8, 2016
|