Physics Energy of Ultraviolet rays is great than Gamma rays Infrared rays Cosmic rays X-rays Gamma rays Infrared rays Cosmic rays X-rays ANSWER DOWNLOAD EXAMIANS APP
Physics Lightning heats the surrounding air to 3000 deg Cent 300 deg Cent 30000 deg Cent 300000 deg Cent 3000 deg Cent 300 deg Cent 30000 deg Cent 300000 deg Cent ANSWER DOWNLOAD EXAMIANS APP
Physics Magnetic keepers are used to protect magnets from : Demagnetization due to heating Earth's magnetic field Self-demagnetization Effect of other magnets Demagnetization due to heating Earth's magnetic field Self-demagnetization Effect of other magnets ANSWER DOWNLOAD EXAMIANS APP
Physics A wire of copper having length I and area of cross-section A is taken and a current i is flown through it. The power dissipated in the wire is P. If we take an aluminium wire having same dimensions and pass the same current through it, the power dissipated will be > P P < P 2P > P P < P 2P ANSWER DOWNLOAD EXAMIANS APP
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 40 2000 80 4000 40 2000 ANSWER DOWNLOAD EXAMIANS APP
Physics Magnetic domains normally occur in Iron All of these Copper Silver Iron All of these Copper Silver ANSWER DOWNLOAD EXAMIANS APP
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