|
You are given two converging lenses of focal length 1.25 cm
|
|
2
|
8654
|
February 18, 2017
|
|
A concave mirror of small aperture forms a sharper image. Why?
|
|
0
|
6814
|
December 12, 2016
|
|
Suppose while sitting in a parked car
|
|
1
|
9116
|
December 12, 2016
|
|
When monochromatic light travels from a rarer to a denser medium, explain the following, giving reasons
|
|
1
|
4285
|
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
|
6328
|
December 12, 2016
|
|
The image obtained with a convex lens is erect
|
|
1
|
3924
|
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
|
4394
|
December 12, 2016
|
|
Figure shows an equiconvex lens
|
|
1
|
7662
|
December 12, 2016
|
|
A screen is placed 90 cm from an object
|
|
1
|
2848
|
December 12, 2016
|
|
The near vision of an average person is 25 cm
|
|
1
|
3896
|
December 12, 2016
|
|
You are given prisms made of crown glass and flint glass with a wide variety of angles
|
|
1
|
2925
|
December 12, 2016
|
|
A man with normal near point (25 cm) reads a book with small print using a magnifying glass
|
|
1
|
7304
|
December 12, 2016
|
|
A small telescope has an objective lens of focal length 140 cm
|
|
1
|
5063
|
December 12, 2016
|
|
An astronomical telescope uses two lenses of power 10 D and ID. What is its magnifying power in normal adjustment?
|
|
0
|
3642
|
December 12, 2016
|
|
The objective of an astronomical telescope
|
|
1
|
2689
|
December 12, 2016
|
|
How is the working of telescope different
|
|
1
|
2382
|
December 12, 2016
|
|
A compound microscope consists of an objective of focal length
|
|
1
|
6413
|
September 8, 2016
|
|
Two convex lenses of same focal length but of apertures
|
|
1
|
2872
|
September 8, 2016
|
|
Draw a schematic diagram
|
|
1
|
1619
|
September 8, 2016
|
|
Draw a ray diagram to show refraction of a ray of monochromatic light passing through a glass prism
|
|
1
|
13283
|
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
|
18533
|
September 8, 2016
|
|
A ray PQ is incident normally on the face AB of a triangular prism of refracting angle of 60°
|
|
1
|
13579
|
September 8, 2016
|
|
Two monochromatic rays of light are incident normally on face AB
|
|
1
|
3990
|
September 8, 2016
|
|
Two monochromatic rays of light are incident normally on the face AB
|
|
1
|
1875
|
September 8, 2016
|
|
A ray PQ incident normally on the refracting face
|
|
1
|
16086
|
September 8, 2016
|
|
Write the relationship between angle of incidence T, angle of prism 'A' and angle of minimum deviation for triangular prism
|
|
0
|
2133
|
September 8, 2016
|
|
Derive the mathematical relation between
|
|
1
|
7499
|
September 8, 2016
|
|
Calculate the distance of an object of height h from a concave mirror of radius of curvature 20 cm
|
|
1
|
11670
|
September 8, 2016
|
|
An object AB is kept in front of a concave mirror as shown in the figure
|
|
1
|
7428
|
September 8, 2016
|
|
A convex lens is placed over a plane mirror
|
|
1
|
4754
|
September 8, 2016
|