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Light Reflection and Refraction

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1
326
An object is placed at the following distances from a convex lens of focal length 15 cm : ...
By Deepak Rock, 4 years ago
replies 1
0
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484
If an object is placed 21 cm from a converging lens, the image formed is slightly smaller ...
By Deepak Rock, 4 years ago
replies 1
0
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500
A lens of focal length 12 cm forms an erect image three times the size of the object. The ...
By Deepak Rock, 4 years ago
replies 1
1
1
261
Explain why, a real image can be projected on a screen but a virtual image cannot. (b) Dra...
By Deepak Rock, 4 years ago
replies 1
0
1
476
Explain what is meant by a virtual, magnified image. (b) Draw a ray diagram to show the fo...
By Deepak Rock, 4 years ago
replies 1
0
1
400
An object is placed well outside the principal focus of a convex lens. Draw a ray diagram ...
By Deepak Rock, 4 years ago
replies 1
0
1
370
Draw ray diagrams to represent the nature, position and relative size of the image formed ...
By Deepak Rock, 4 years ago
replies 1
0
1
434
With the help of a labelled diagram, explain how a concave lens diverges a beam of paralle...
By Deepak Rock, 4 years ago
replies 1
0
1
138
With the help of a labelled diagram explain how a convex lens converges a beam of parallel...
By Deepak Rock, 4 years ago
replies 1
0
1
427
How could you find the focal length of a convex lens rapidly but approximately?
By Deepak Rock, 4 years ago
replies 1
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