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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.
पर्याय
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
What is meant by a power of a lens? Define its SI unit.
Ranbir claims to have obtained an image twice the size of the object with a concave lens. Is he correct? Give a reason for your answer.
The power of a lens is +2.0D. Its focal length should be :
Consider the situation described in the previous problem. Where should a point source be placed on the principal axis so that the two images form at the same place?
Which lens has more power a thick lens or a thin lens?
The power of a lens is +2.0 D. Find its focal length and state the kind of lens.
If there is a convex lens of focal length 75 cm and a concave lens of focal length 40 cm, then calculate their combined power and combined focal length.
A point object is placed at O in front of a glass sphere as shown in figure.
Show the formation of the image by the sphere.
The lens of power + 1·0 D is ______.
