EASY
10th CBSE
IMPORTANT
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Twinkling of stars is due to atmospheric

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Important Questions on The Human Eye and the Colourful World

EASY
10th CBSE
IMPORTANT
Which of the following statements is correct regarding the propagation of light of different colour of white light in air?
EASY
10th CBSE
IMPORTANT
The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red light
EASY
10th CBSE
IMPORTANT
Which of the following phenomena contributes significantly to the reddish appearance of the sun at sunrise or sunset?
EASY
10th CBSE
IMPORTANT
When light rays enter the eye, most of the refraction occurs at the 
EASY
10th CBSE
IMPORTANT
The focal length of the eye lens increases when eye muscles