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What Happens to the Size of Pupil of Our Eye (I) in Dim Light (Ii) in Bright Light? - Science

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Question

What happens to the size of pupil of our eye (i) in dim light (ii) in bright light? 

Solution

 The size of the pupil of our eye
(i) becomes large in dim light so as to accommodate more light in the eyes
(ii) becomes small in bright light so that very little light enters the eye

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Chapter 6: The Human Eyes And The Colorful World - Exercise 1 [Page 271]

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Lakhmir Singh Physics (Science) [English] Class 10
Chapter 6 The Human Eyes And The Colorful World
Exercise 1 | Q 39.1 | Page 271

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