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प्रश्न
Assertion and reasoning type
- Assertion: Myopia is due to the increase in the converging power of eye lens.
- Reason: Myopia can be corrected with the help of concave lens.
विकल्प
If both assertion and reason are true and the reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
Assertion is true but reason is false.
Assertion is false but reason is true.
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उत्तर
If both assertion and reason are true but reason is not the correct explanation of assertion.
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संबंधित प्रश्न
Which has more power : a thick convex lens or a thin convex lens, made of the same glass? Give reason for your choice.
Fill in the following blank with suitable words :
The reciprocal of the focal length in metres gives you the _________ of the lens, which is measured in ___________.
Two lenses A and B have focal lengths of +20 cm and, −10 cm, respectively.
(a) What is the nature of lens A and lens B?
(b) What is the power of lens A and lens B?
(c) What is the power of combination if lenses A and B are held close together?
How is the power of a lens related to its focal length?
How does the power of a lens change if its focal length is doubled?
On reducing the focal length of a lens, its power ______.
A thin converging lens is formed with one surface convex and the other plane. Does the position of image depend on whether the convex surface or the plane surface faces the object?
How is accommodation produced?
The power of the magnifying glass depends on the distance of the magnifying glass from object.
The power of lens depends on the focal length of the lens
