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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
|
15679
|
March 30, 2021
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|
Define principal focus of a spherical mirror
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3
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13823
|
August 4, 2020
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|
State laws of refraction
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2
|
3018
|
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
|
10198
|
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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17150
|
September 25, 2016
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Under what condition in an arrangement of two plane mirrors
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1
|
10126
|
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
|
15196
|
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
|
20045
|
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
|
15728
|
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
|
19963
|
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
|
11051
|
September 24, 2016
|
|
Figure below shows a lens treated as a combination of two prisms and a glass block
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|
1
|
2634
|
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
|
1463
|
September 24, 2016
|
|
In figure given below
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1
|
1309
|
September 24, 2016
|
|
Copy the figure and show the image formation with the help of rays
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|
1
|
710
|
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
|
2552
|
September 24, 2016
|
|
You are given a convex lens of focal length 10 cm
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1
|
3005
|
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
|
1623
|
September 24, 2016
|
|
You have a spherical mirror
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|
1
|
1589
|
September 24, 2016
|
|
A ray of light XY is incident on a spherical mirror as shown in the diagram
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1
|
2879
|
September 24, 2016
|
|
A ray of light XY is incident on a mirror as shown in the figure
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|
1
|
3664
|
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
|
4385
|
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
|
509
|
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
|
603
|
September 24, 2016
|
|
What happens the image formed by a convex lens if its lower part is blackened?
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|
0
|
1139
|
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
|
2382
|
September 24, 2016
|
|
The angle between an incident ray and the mirror is as shown below
|
|
1
|
3176
|
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
|
4398
|
September 24, 2016
|
|
The mirror outside the driver side of a vehicle is usually a convex mirror
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|
1
|
4291
|
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
|
8917
|
September 24, 2016
|