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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: - Find out the e.m.f. produced when the current changes from 0 to 1 A in 10 sec.
- Three capacitors 3μF,6μF and 6μF are connected in series to a source of 120V.
- The ratio of minimum wavelengths of Lyman and Balmer series will be
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Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Find out the e.m.f. produced when the current changes from 0 to 1 A in 10 sec.
- Three capacitors 3μF,6μF and 6μF are connected in series to a source of 120V.
- The ratio of minimum wavelengths of Lyman and Balmer series will be
- The sodium nucleus ₁₁Na²³ contains
- What are the unit of K = 1 / (4 π ?￢ﾂﾒ)
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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