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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: - The conducting loop in the form of a circle is placed in a uniform magneitc field
- A resistance of 20 ohm is connected to a source of an alternating potential V
- Photon of frequency ν has a momentum associated with it. If c is the velocity
- The work done in which of the following processes is equal to the change in internal energy
- Two coherent monochromatic beams of intensities I and 4I respectively, are superposed.
Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The conducting loop in the form of a circle is placed in a uniform magneitc field
- A resistance of 20 ohm is connected to a source of an alternating potential V
- Photon of frequency ν has a momentum associated with it. If c is the velocity
- The work done in which of the following processes is equal to the change in internal energy
- Two coherent monochromatic beams of intensities I and 4I respectively, are superposed.
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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