| ⇦ | 
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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: - If the focal length of objective lens is increased, then magnifying power of
- The position vector of a particle R as a function of time is given by
- The bandgap in Germanium and silicon, in eV, are respectively
- The electron drift speed is small and the change of the electron is also small
- Two sources of sound placed close to each other are emitting progressive waves
Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If the focal length of objective lens is increased, then magnifying power of
- The position vector of a particle R as a function of time is given by
- The bandgap in Germanium and silicon, in eV, are respectively
- The electron drift speed is small and the change of the electron is also small
- Two sources of sound placed close to each other are emitting progressive waves
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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