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Which of the following colours is least scattered by fog, dust or smoke:

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A. Violet B. Blue C. Red D. Yellow

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Class 10 science 3 years 1 Answer 11 views Enlightened 0

The phenomenon of light responsible for the working of human eye is :

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A. Reflection B. Refraction C. Power of accommodation D. Persistence of vision

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Class 10 science 3 years 1 Answer 6 views Enlightened 0

The light sensitive cell present on retina and is sensitive to the intensity of light is:

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A. cones B. Rod cell C. Both cone and rod cells D. None

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Class 10 science 3 years 2 Answers 13 views Enlightened 0

.The ability of eye lens to adjust its focal length to form a sharp image of the object at varying distances on the retina is called

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(a) Power of observation of the eye (b) Power of adjustment of the eye (c) Power of accommodation of the eye (d) Power of enabling of the eye

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Class 10 science 3 years 1 Answer 6 views Enlightened 0

The defect of vision in which the person is able to see distant object distinctly but. cannot see nearby objects clearly is called

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(a) Long-sightedness (b) Far-sightedness (c) Hypermetropia (d) All above

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Class 10 science 3 years 1 Answer 43 views Enlightened 0

The black opening between the aqueous humour and the lens is called

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(a) retina (b) iris (c) cornea (d) pupil

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Class 10 science 3 years 1 Answer 9 views Enlightened 0

Bi-focal lens are required to correct

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(a) astigmatism (b) coma (c) myopia (d) presbyopia

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Class 10 science 3 years 3 Answers 125 views Enlightened 1

Bi-focal lens are required to correct

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(a) astigmatism (b) coma (c) myopia (d) presbyopia

Class 10 science 3 years 0 Answers 5 views Enlightened 0

8. The focal length of the eye lens increases when eye muscles

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(a) are relaxed and lens becomes thinner (b) contract and lens becomes thicker (c) are relaxed and lens becomes thicker (d) contract and lens becomes thinner

Class 10 science 3 years 0 Answers 3 views Enlightened 0

8. The focal length of the eye lens increases when eye muscles

Question

(a) are relaxed and lens becomes thinner (b) contract and lens becomes thicker (c) are relaxed and lens becomes thicker (d) contract and lens becomes thinner

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Class 10 science 3 years 1 Answer 13 views Enlightened 0

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