Short Quiz

Question 1 of 5

NCERT Exemplar

When light rays enter the eye, most of the refraction occurs at the

A crystalline lens B outer surface of the cornea C iris D pupil

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Question 2 of 5

NCERT Exemplar

The bluish colour of water in deep sea is due to

A the presence of algae and other plants found in water B reflection of sky in water C scattering of light D absorption of light by the sea

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Question 3 of 5

CBSE Board Exam 2016

A person cannot see distinctly objects kept beyond 2m. This defect can be corrected by using a lens of power

A + 0.5 D B – 0.5 D C + 0.2 D D – 0.2 D

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Question 4 of 5

NCERT Exemplar

Which of the following statement is correct?

A A person with myopia can see distant objects clearly B A person with hypermetropia can see nearby objects clearly C A person with myopia can see nearby objects clearly D A person with hypermetropia cannot see distant objects clearly

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Question 5 of 5

NCERT Exemplar

The focal length of the eye lens increases when eye muscles

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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