|
A pencil when dipped in water in a glass tumbler appears to be bent at the interface of air and water
|
|
2
|
15831
|
March 30, 2021
|
|
Define principal focus of a spherical mirror
|
|
3
|
14063
|
August 4, 2020
|
|
State laws of refraction
|
|
2
|
3296
|
June 12, 2019
|
|
The following table gives the values of refractive indices of a few media :
|
|
2
|
10473
|
March 3, 2018
|
|
Draw a ray diagram showing the path of rays of light when it enters with oblique incidence
|
|
1
|
17485
|
September 25, 2016
|
|
Under what condition in an arrangement of two plane mirrors
|
|
1
|
10324
|
September 24, 2016
|
|
How are power and focal length of a lens related? You are provided with two lenses of focal length 20 cm
|
|
1
|
15299
|
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
|
|
1
|
20214
|
September 24, 2016
|
|
A convex lens of focal length 20 cm can produce a magnified virtual as well as real image
|
|
1
|
15801
|
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
|
|
0
|
20323
|
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
|
|
1
|
11136
|
September 24, 2016
|
|
Figure below shows a lens treated as a combination of two prisms and a glass block
|
|
1
|
2719
|
September 24, 2016
|
|
Copy the given figure and complete it to show the formation of the image of the object AB
|
|
1
|
1578
|
September 24, 2016
|
|
In figure given below
|
|
1
|
1442
|
September 24, 2016
|
|
Copy the figure and show the image formation with the help of rays
|
|
1
|
753
|
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
|
2752
|
September 24, 2016
|
|
You are given a convex lens of focal length 10 cm
|
|
1
|
3538
|
September 24, 2016
|
|
A ray of light AB parallel to the principal axis incident a convex lens as shown in figure
|
|
1
|
1747
|
September 24, 2016
|
|
You have a spherical mirror
|
|
1
|
1641
|
September 24, 2016
|
|
A ray of light XY is incident on a spherical mirror as shown in the diagram
|
|
1
|
3022
|
September 24, 2016
|
|
A ray of light XY is incident on a mirror as shown in the figure
|
|
1
|
3943
|
September 24, 2016
|
|
A parallel beam of light is incident on a concave mirror and a convex mirror as shown in figure below:
|
|
1
|
4743
|
September 24, 2016
|
|
How will you decide whether a given piece of glass is convex lens, concave lens or a plane glass plate?
|
|
0
|
549
|
September 24, 2016
|
|
Is it possible for lens to act as a convergent lens in one medium and a divergent lens in another?
|
|
0
|
648
|
September 24, 2016
|
|
What happens the image formed by a convex lens if its lower part is blackened?
|
|
0
|
1185
|
September 24, 2016
|
|
A concave mirror and convex lens are held in water. What changes, if any, do you expect in their focal length?
|
|
0
|
2430
|
September 24, 2016
|
|
The angle between an incident ray and the mirror is as shown below
|
|
1
|
3401
|
September 24, 2016
|
|
An object is brought towards a concave mirror. How does the position and size of the image change?
|
|
0
|
4466
|
September 24, 2016
|
|
The mirror outside the driver side of a vehicle is usually a convex mirror
|
|
1
|
4383
|
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?
|
|
0
|
8988
|
September 24, 2016
|