|
You are given two converging lenses of focal length 1.25 cm
|
|
2
|
8260
|
February 18, 2017
|
|
A concave mirror of small aperture forms a sharper image. Why?
|
|
0
|
6732
|
December 12, 2016
|
|
Suppose while sitting in a parked car
|
|
1
|
9056
|
December 12, 2016
|
|
When monochromatic light travels from a rarer to a denser medium, explain the following, giving reasons
|
|
1
|
4268
|
December 12, 2016
|
|
You have learnt that plane and convex mirrors produce virtual images of objects. Can they produce real images under some circumstances? Explain
|
|
1
|
6304
|
December 12, 2016
|
|
The image obtained with a convex lens is erect
|
|
1
|
3916
|
December 12, 2016
|
|
A convex lens of focal length 30 cm is placed coaxially with a convex mirror of radius of curvature 20 cm
|
|
1
|
4367
|
December 12, 2016
|
|
Figure shows an equiconvex lens
|
|
1
|
7600
|
December 12, 2016
|
|
A screen is placed 90 cm from an object
|
|
1
|
2836
|
December 12, 2016
|
|
The near vision of an average person is 25 cm
|
|
1
|
3890
|
December 12, 2016
|
|
You are given prisms made of crown glass and flint glass with a wide variety of angles
|
|
1
|
2911
|
December 12, 2016
|
|
A man with normal near point (25 cm) reads a book with small print using a magnifying glass
|
|
1
|
7289
|
December 12, 2016
|
|
A small telescope has an objective lens of focal length 140 cm
|
|
1
|
5052
|
December 12, 2016
|
|
An astronomical telescope uses two lenses of power 10 D and ID. What is its magnifying power in normal adjustment?
|
|
0
|
3638
|
December 12, 2016
|
|
The objective of an astronomical telescope
|
|
1
|
2674
|
December 12, 2016
|
|
How is the working of telescope different
|
|
1
|
2374
|
December 12, 2016
|
|
A compound microscope consists of an objective of focal length
|
|
1
|
6381
|
September 8, 2016
|
|
Two convex lenses of same focal length but of apertures
|
|
1
|
2868
|
September 8, 2016
|
|
Draw a schematic diagram
|
|
1
|
1618
|
September 8, 2016
|
|
Draw a ray diagram to show refraction of a ray of monochromatic light passing through a glass prism
|
|
1
|
13089
|
September 8, 2016
|
|
Plot a graph to show variation of the angle of deviation as a function of angle of incidence for light passing through a prism
|
|
1
|
18457
|
September 8, 2016
|
|
A ray PQ is incident normally on the face AB of a triangular prism of refracting angle of 60°
|
|
1
|
13497
|
September 8, 2016
|
|
Two monochromatic rays of light are incident normally on face AB
|
|
1
|
3975
|
September 8, 2016
|
|
Two monochromatic rays of light are incident normally on the face AB
|
|
1
|
1844
|
September 8, 2016
|
|
A ray PQ incident normally on the refracting face
|
|
1
|
16038
|
September 8, 2016
|
|
Write the relationship between angle of incidence T, angle of prism 'A' and angle of minimum deviation for triangular prism
|
|
0
|
2131
|
September 8, 2016
|
|
Derive the mathematical relation between
|
|
1
|
7425
|
September 8, 2016
|
|
Calculate the distance of an object of height h from a concave mirror of radius of curvature 20 cm
|
|
1
|
11664
|
September 8, 2016
|
|
An object AB is kept in front of a concave mirror as shown in the figure
|
|
1
|
7389
|
September 8, 2016
|
|
A convex lens is placed over a plane mirror
|
|
1
|
4741
|
September 8, 2016
|