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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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2
|
15661
|
March 30, 2021
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Define principal focus of a spherical mirror
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3
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13778
|
August 4, 2020
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|
State laws of refraction
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2
|
2990
|
June 12, 2019
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The following table gives the values of refractive indices of a few media :
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2
|
10154
|
March 3, 2018
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Draw a ray diagram showing the path of rays of light when it enters with oblique incidence
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1
|
17112
|
September 25, 2016
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Under what condition in an arrangement of two plane mirrors
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1
|
10094
|
September 24, 2016
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How are power and focal length of a lens related? You are provided with two lenses of focal length 20 cm
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1
|
15150
|
September 24, 2016
|
|
Sudha finds out that the 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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1
|
20028
|
September 24, 2016
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|
A convex lens of focal length 20 cm can produce a magnified virtual as well as real image
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|
1
|
15707
|
September 24, 2016
|
|
Why does a light ray incident on a rectangular glass slab immersed in any medium emerges parallel to itself ? Explain using a diagram
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|
0
|
19909
|
September 24, 2016
|
|
Identify the device used as a spherical mirror or lens in following cases, when the image formed is virtual and erect in each case
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|
1
|
11037
|
September 24, 2016
|
|
Figure below shows a lens treated as a combination of two prisms and a glass block
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|
1
|
2610
|
September 24, 2016
|
|
Copy the given figure and complete it to show the formation of the image of the object AB
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1
|
1458
|
September 24, 2016
|
|
In figure given below
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1
|
1296
|
September 24, 2016
|
|
Copy the figure and show the image formation with the help of rays
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|
1
|
699
|
September 24, 2016
|
|
The ray diagram given below illustrates the experimental set up for the determination of the focal length of a converging lens using a plane mirror
|
|
1
|
2521
|
September 24, 2016
|
|
You are given a convex lens of focal length 10 cm
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1
|
2975
|
September 24, 2016
|
|
A ray of light AB parallel to the principal axis incident a convex lens as shown in figure
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|
1
|
1602
|
September 24, 2016
|
|
You have a spherical mirror
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|
1
|
1583
|
September 24, 2016
|
|
A ray of light XY is incident on a spherical mirror as shown in the diagram
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1
|
2856
|
September 24, 2016
|
|
A ray of light XY is incident on a mirror as shown in the figure
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|
1
|
3612
|
September 24, 2016
|
|
A parallel beam of light is incident on a concave mirror and a convex mirror as shown in figure below:
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|
1
|
4327
|
September 24, 2016
|
|
How will you decide whether a given piece of glass is convex lens, concave lens or a plane glass plate?
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|
0
|
505
|
September 24, 2016
|
|
Is it possible for lens to act as a convergent lens in one medium and a divergent lens in another?
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|
0
|
597
|
September 24, 2016
|
|
What happens the image formed by a convex lens if its lower part is blackened?
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|
0
|
1127
|
September 24, 2016
|
|
A concave mirror and convex lens are held in water. What changes, if any, do you expect in their focal length?
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|
0
|
2374
|
September 24, 2016
|
|
The angle between an incident ray and the mirror is as shown below
|
|
1
|
3136
|
September 24, 2016
|
|
An object is brought towards a concave mirror. How does the position and size of the image change?
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|
0
|
4389
|
September 24, 2016
|
|
The mirror outside the driver side of a vehicle is usually a convex mirror
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|
1
|
4274
|
September 24, 2016
|
|
In case of a convex mirror, if the object is moved away from the surface of the mirror, how does the position and size of image change?
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|
0
|
8905
|
September 24, 2016
|