Physics
'Mirage' is an example of

Refraction and total internal reflection of light
Total internal reflection of light only
Dispersion of light only
Refraction of light only

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Physics
It is dangerous to observe Solar eclipse with naked eyes because

All radiations from sun initiate chemical reactions in eyes
Cosmic rays reach eyes more during the eclipse
Ultraviolet radiations from Sun burn our retina
Infrared radiations from sun burn our retina

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