Physics The blue colour of sky is due to Reflection of sunlight Scattering of shorter wavelengths of sunlight in the atmosphere Refraction of sunlight Scattering of longer wavelengths of sunlight in the atmosphere Reflection of sunlight Scattering of shorter wavelengths of sunlight in the atmosphere Refraction of sunlight Scattering of longer wavelengths of sunlight in the atmosphere ANSWER DOWNLOAD EXAMIANS APP
Physics 1 Micron is equal to 10–9 m 10–15 m 10–12 m 10–6 m 10–9 m 10–15 m 10–12 m 10–6 m ANSWER DOWNLOAD EXAMIANS APP
Physics In a Laser (say neon laser) all the atoms emit the light waves of Same frequency All of these Same phase Same amplitude Same frequency All of these Same phase Same amplitude ANSWER DOWNLOAD EXAMIANS APP
Physics A rubber ball is dropped from a height of 2 metres. To what height will it rise if there is no loss of energy/velocity after rebounding ? 2 metres 4 metres 1 metre 3 metres 2 metres 4 metres 1 metre 3 metres ANSWER DOWNLOAD EXAMIANS APP
Physics Cloudy nights are warmer compared to clear cloudless nights, because clouds mainly Prevent cold waves from the sky descending on earth Produce heat and radiate it toward earth Absorb heat from the atmosphere send it towards earth Reflect back the heat given by earth Prevent cold waves from the sky descending on earth Produce heat and radiate it toward earth Absorb heat from the atmosphere send it towards earth Reflect back the heat given by earth ANSWER DOWNLOAD EXAMIANS APP
Physics When a barometer is rising air pressure is Zero Constant Decreasing Increasing Zero Constant Decreasing Increasing ANSWER DOWNLOAD EXAMIANS APP
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