Home SCIENCE Kerala Public Service Examinations details-Blue colour of Sky&Speed of Sound Waves

Kerala Public Service Examinations details-Blue colour of Sky&Speed of Sound Waves

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Blue Colour of Sky

The following details are including in the objective type and descriptive type of Kerala Public Service Examinations.This points are very useful in the online test conducted by Kerala Public Service Commissions

As sunlight travels through earths atmosphere ,the light get bounced in all direction as it encounters the atmospheric particles .This is clled scattering of light .Lights of shorter wavelength is scattered more than light of longer wavelengths.Scattering of light causes the blue colour of sky and the reddening of sun at sunrise or sunset.

Speed of Sound waves through different media

 (Key points in the Kerala Public Service Examinations)

Medium Temperature (degree) Speed(m/s)
Air 0 333.3
Hydrogen 0 1286
Water 15 1450
Copper 20 3560
Iron 20 5130
Granite 20 6000
Vulcanized rubber 0 54

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