| 1. | When an object moves towards a convex lens the size of image _____ ? | |
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Increases
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Remains the same
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First decreases then increases
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Decreases
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Report Question| 2. | When a person is myopic, he/ she can clearly see ? | |
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Neither nearby nor far off objects
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only far off objects
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Only nearby objects
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both nearby and far off objects
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| 3. | To focus the image of a nearby object on the retina of an eye ? | |
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The thickness of eye-lens is decreased
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The thickness of eye-lens is increased
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The distance between eye-lens and retina is decreased
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The distance between eye-lens and retina is increased
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| 4. | Bi-focal lens are required to correct ? | |
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presbyopia
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coma
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myopia
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astigmatism
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| 5. | Ruchi is writing some important points about the “donation of eyes”. choose the incorrect statement ? | |
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Those donated eyes which are not suitable for transplantation are used for doing research and for teaching purposes in medical colleges.
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People who wear spectacles or have undergone cataract operation scan also donate Eyes.
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The doctors of the eye bank team remove the eyes at the home of the dead person or at the hospital and it takes 10-15 minutes.
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None of the above.
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| 6. | Blue colour of the sky is due to the phenomenon of ? | |
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Dispersion of light
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Refraction of light
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Scattering of light
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Reflection of light
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| 7. | The variation of focal length to form a sharp image on the retina is called ? | |
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Sutter
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Aperture
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Retina control
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Accommodation
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| 8. | Assertion: The near-point of a hypermetropic eye is more than 25 cm away. Reason: Hypermetropia is corrected using spectacles containing concave lenses. ? | |
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Both A and R are true but R is not the correct explanation of (a)
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Both A and R are true and R is the correct explanation of (a)
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A is false but R is true.
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A is true but R is false.
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| 9. | The part of eye that is a messenger of electrochemical signals from eye to brain is called ? | |
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Cornea
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Iris
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Optic nerve
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Blood vessel
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