Physics Find the resistance (in mega) of a wire of length 20m, cross sectional area 1 cm2 and made of a material of resistivity 200m. 80 4000 2000 40 80 4000 2000 40 ANSWER DOWNLOAD EXAMIANS APP
Physics The velocity of falling rain drops attains a terminal value because of Air current Viscous force exerted by air Surface tension Upward thrust due to air Air current Viscous force exerted by air Surface tension Upward thrust due to air ANSWER DOWNLOAD EXAMIANS APP
Physics The sky appears blue because of Atmospheric water vapour Reflection on sea water Emision of blue wavelength by the sun Scattering of light Atmospheric water vapour Reflection on sea water Emision of blue wavelength by the sun Scattering of light ANSWER DOWNLOAD EXAMIANS APP
Physics Certain substances loose their electrical resistance completely at super low temperature. Such substances are called. Dielectrics Superconductors Perfect conductors Semi conductors Dielectrics Superconductors Perfect conductors Semi conductors ANSWER DOWNLOAD EXAMIANS APP
Physics Rainbow is seen after rain because of hanging molecules of water which act as Slabs Prisms Lenses Mirrors Slabs Prisms Lenses Mirrors ANSWER DOWNLOAD EXAMIANS APP
Physics When heated from 0 to 100oC volume of a given mass of water will : Decrease gradually Increase and then will decrease Decrease and then will increase Increase gradually Decrease gradually Increase and then will decrease Decrease and then will increase Increase gradually ANSWER DOWNLOAD EXAMIANS APP
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