Physics The blue colour of water in the sea is due to Reflection of blue light by impurities in sea water Absorption of other colours except blue by water molecules Reflection of blue sky by sea water Scattering of blue light by water molecules Reflection of blue light by impurities in sea water Absorption of other colours except blue by water molecules Reflection of blue sky by sea water Scattering of blue light by water molecules ANSWER DOWNLOAD EXAMIANS APP
Physics Which colour has the highest energy? White Violet Blue Red White Violet Blue Red ANSWER DOWNLOAD EXAMIANS APP
Physics The waveform of a certain signal can be studied by Sonometer Spectrometer Cathode ray oscilloscope P – n junction diode Sonometer Spectrometer Cathode ray oscilloscope P – n junction diode ANSWER DOWNLOAD EXAMIANS APP
Physics The height of a geo-stationary satellite from the Earth's surface is approximately : 36,000 km 42,000 km None of these 30,000 km 36,000 km 42,000 km None of these 30,000 km ANSWER DOWNLOAD EXAMIANS APP
Physics If the phase difference between two points is 120° for a wave with velocity of 360 m/s and frequency 500 Hz, then path difference between the two points is 1 cm 24 cm 12 cm 6 cm 1 cm 24 cm 12 cm 6 cm ANSWER DOWNLOAD EXAMIANS APP
Physics Fibre optics work on the principle of Total internal reflection Scattering of light Total internal absorption Optical rotation Total internal reflection Scattering of light Total internal absorption Optical rotation ANSWER DOWNLOAD EXAMIANS APP
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