Physics
'Mirage' is an example of

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

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Physics
A capillary tube is partially dipped vertically in a vessel containing water. Due to capillarity water rises in the tube. The height of water rise in the tube can be increased by

None of these
Decreasing the radius of the capillary tube
Increasing the height of water in the vessel
Increasing the radius of the capillary tube

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