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A small bulb (assumed to be' a point source) is placed at the bottom of a tank containing water
|
|
1
|
8547
|
September 8, 2016
|
|
A convex lens of focal length 25 cm is placed coaxially
|
|
1
|
7385
|
September 8, 2016
|
|
Write the necessary conditions for the phenomenon of total internal reflection to occur?
|
|
1
|
4787
|
September 8, 2016
|
|
A mobile phone lies along the principal axis of a concave mirror
|
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1
|
2311
|
September 8, 2016
|
|
Write the conditions for observing a rainbow. Show, formation of a rainbow
|
|
0
|
5861
|
September 8, 2016
|
|
Use the mirror equation to show that an object placed, between f and 2f of a concave mirror produces a real image beyond 2f
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|
0
|
13745
|
September 8, 2016
|
|
Why does white light disperse when, passed through a glass prism?
|
|
1
|
4451
|
September 8, 2016
|
|
For the same value of angle of incidence, the angles of refraction in three media
|
|
1
|
2349
|
September 8, 2016
|
|
Under what condition does a biconvex lens of glass having a certain refractive index act as a plane glass sheet when immersed in a liquid?
|
|
0
|
3503
|
September 8, 2016
|
|
If the wavelength of light incident on a convex lens is increased, how will its focal length change?
|
|
0
|
3446
|
September 8, 2016
|
|
What is the relation between critical angle and refractive index of a material?
|
|
1
|
7050
|
September 8, 2016
|
|
A convex lens is placed in contact with a plane mirror
|
|
0
|
1727
|
September 8, 2016
|
|
Redraw the diagram given below and mark the position of the centre of curvature of the spherical mirror used in the given set up
|
|
1
|
2614
|
September 8, 2016
|
|
A ray of light falls on a transparent sphere with centre C as shown in the figure
|
|
1
|
11767
|
September 8, 2016
|
|
A biconvex lens made of a transparent material of refractive index
|
|
1
|
2445
|
September 8, 2016
|
|
When an object is placed between f and 2f of a concave mirror, would the image formed be (i) real or virtual and (ii) diminished or magnified?
|
|
0
|
3645
|
September 8, 2016
|
|
A concave lens of refractive index 1.5 is immersed in a medium of refractive index 1.6$. What is the nature of the lens?
|
|
0
|
1739
|
September 8, 2016
|
|
What does sun appear red at sunrise and sunset?
|
|
0
|
2275
|
September 8, 2016
|
|
An object is placed in front of convex lens made of glass
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|
1
|
3282
|
September 8, 2016
|