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Astigmatism is corrected by using
Options
(a) cylindrical lens
(b) plano-convex lens
(c) plano-concave lens
(d) convex lens
Correct Answer:
cylindrical lens
Explanation:
In this defect, eye cannot perpendicular directions clearly that is horizontal and vertical lines simultaneously. It is due to imperfect spherical nature of eye lens. This defect can be removed by using cylindrical lenses.
Related Questions: - A wave travelling in the +ve x-direction having displacement along y-direction as 1m
- If by mistake voltmeter is connected in series and ammeter in parallel then
- Two poles of same strength attract each other with a force of magnitude F
- Electrons with energy 80 keV are incident on the tungsten target of an X-ray tube.
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Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A wave travelling in the +ve x-direction having displacement along y-direction as 1m
- If by mistake voltmeter is connected in series and ammeter in parallel then
- Two poles of same strength attract each other with a force of magnitude F
- Electrons with energy 80 keV are incident on the tungsten target of an X-ray tube.
- A bar magnet with magnetic moment 2.5×10³ JT⁻¹ is rotating in horizontal plane
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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