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Light Reflection and Refraction

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1
468
An object of height 4.25 mm is placed at a distance of 10 cm from a convex lens of power +...
By Deepak Rock, 4 years ago
replies 1
0
1
359
An object of height 4 cm is placed at a distance of 15 cm in front of a concave lens of po...
By Deepak Rock, 4 years ago
replies 1
0
1
424
The reciprocal of the focal length in metres gives you the……….. of the lens, which is meas...
By Shivani siva, 4 years ago
replies 1
0
1
404
The focal length of a lens is +150 mm. What kind of lens is it and what is its power?
By Shivani siva, 4 years ago
replies 1
0
1
357
A lens has a focal length of, -10 cm. What is the power of the lens and what is its nature...
By Shivani siva, 4 years ago
replies 1
0
1
477
A doctor has prescribed a corrective lens of power, -1.5 D. Find the focal length of the l...
By Shivani siva, 4 years ago
replies 1
0
1
401
The optician’s prescription for a spectacle lens is marked +0.5 D. What is the : (a) natur...
By Shivani siva, 4 years ago
replies 1
0
1
493
What is the nature of a lens whose power is, -4 D?
By Shivani siva, 4 years ago
replies 1
0
1
250
What is the nature of a lens having a power of +0.5 D?
By Shivani siva, 4 years ago
replies 1
0
1
331
The power of a lens is, -2D. What is its focal length?
By Shivani siva, 4 years ago
replies 1
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