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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
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15795
|
March 30, 2021
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Define principal focus of a spherical mirror
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3
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14003
|
August 4, 2020
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State laws of refraction
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2
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3208
|
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
|
10355
|
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
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17303
|
September 25, 2016
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Under what condition in an arrangement of two plane mirrors
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1
|
10282
|
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
|
15267
|
September 24, 2016
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|
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
|
20128
|
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
|
15787
|
September 24, 2016
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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
|
20142
|
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
|
11099
|
September 24, 2016
|
|
Figure below shows a lens treated as a combination of two prisms and a glass block
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|
1
|
2702
|
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
|
1525
|
September 24, 2016
|
|
In figure given below
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1
|
1378
|
September 24, 2016
|
|
Copy the figure and show the image formation with the help of rays
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1
|
748
|
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
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|
1
|
2642
|
September 24, 2016
|
|
You are given a convex lens of focal length 10 cm
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1
|
3197
|
September 24, 2016
|
|
A ray of light AB parallel to the principal axis incident a convex lens as shown in figure
|
|
1
|
1723
|
September 24, 2016
|
|
You have a spherical mirror
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|
1
|
1633
|
September 24, 2016
|
|
A ray of light XY is incident on a spherical mirror as shown in the diagram
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1
|
2981
|
September 24, 2016
|
|
A ray of light XY is incident on a mirror as shown in the figure
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|
1
|
3854
|
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
|
4628
|
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
|
542
|
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
|
639
|
September 24, 2016
|
|
What happens the image formed by a convex lens if its lower part is blackened?
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|
0
|
1182
|
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
|
2422
|
September 24, 2016
|
|
The angle between an incident ray and the mirror is as shown below
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|
1
|
3322
|
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
|
4447
|
September 24, 2016
|
|
The mirror outside the driver side of a vehicle is usually a convex mirror
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|
1
|
4361
|
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
|
8968
|
September 24, 2016
|