Physics
Ozone layer in the outer atmosphere helps us in

Reflecting radio waves and makes radio communication possible
Absorbing cosmic ray particles
Regulating the temperature of atmosphere
Absorbing UV radiations

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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
Increasing the height of water in the vessel
Decreasing the radius of the capillary tube
Increasing the radius of the capillary tube

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