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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 angle of incidence for a ray of light at a refracting surface of a prism is 45⁰.
- If in a p-n junction, a square input signal of 10 V is applied as shown, then the output
- A ball moving with velocity 2 m/s collides head on with another stationary ball
- The resistance of a bulb filament is 100 Ω at a temperature of 100⁰C.
- Young’s modulus of the material of a wire is 18×10¹¹ dyne cm⁻².its value in SI is
Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The angle of incidence for a ray of light at a refracting surface of a prism is 45⁰.
- If in a p-n junction, a square input signal of 10 V is applied as shown, then the output
- A ball moving with velocity 2 m/s collides head on with another stationary ball
- The resistance of a bulb filament is 100 Ω at a temperature of 100⁰C.
- Young’s modulus of the material of a wire is 18×10¹¹ dyne cm⁻².its value in SI is
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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