Physics Sound becomes hazardous noise pollution at decibels? Above 50 db Above 120 db Above 30 db Above 80 db Above 50 db Above 120 db Above 30 db Above 80 db ANSWER DOWNLOAD EXAMIANS APP
Physics Optical Fibre technology works on which of these principles of Physics? Newton's law of Motion Bernoulli's Principle Photoelectric effect Total internal reflection of Light Newton's law of Motion Bernoulli's Principle Photoelectric effect Total internal reflection of Light ANSWER DOWNLOAD EXAMIANS APP
Physics A man stands in a lift which accelerates upwards. The resultant reaction force on the floor of the lift is Less than the weight of the man Greater than the weight of the man Zero Same as the weight of the man Less than the weight of the man Greater than the weight of the man Zero Same as the weight of the man ANSWER DOWNLOAD EXAMIANS APP
Physics It is easier for a man to swim in sea water, than in river water because The density of sea water is lesser than the density of river water The sea is wider than the river The density of sea water is more than the density of river water The sea is-deeper than the river The density of sea water is lesser than the density of river water The sea is wider than the river The density of sea water is more than the density of river water The sea is-deeper than the river ANSWER DOWNLOAD EXAMIANS APP
Physics The blue colour of water in the sea is due to Reflection of blue sky by sea water Scattering of blue light by water molecules Absorption of other colours except blue by water molecules Reflection of blue light by impurities in sea water Reflection of blue sky by sea water Scattering of blue light by water molecules Absorption of other colours except blue by water molecules Reflection of blue light by impurities in sea water ANSWER DOWNLOAD EXAMIANS APP
Physics A small drop of oil spreads over water because : Oil has a higher viscosity Oil has a higher surface tension Water has a higher viscosity Water has a higher surface tension Oil has a higher viscosity Oil has a higher surface tension Water has a higher viscosity Water has a higher surface tension ANSWER DOWNLOAD EXAMIANS APP
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