Physics Suitable impurities are added to a semiconductor depending on its use. This is done in order to increase its electrical resistivity increase its life enable it to withstand higher voltages increase its electrical conductivity increase its electrical resistivity increase its life enable it to withstand higher voltages increase its electrical conductivity ANSWER DOWNLOAD EXAMIANS APP
Physics What part of the atom has a positive charge? Electron Proton Neutron All listed here Electron Proton Neutron All listed here ANSWER DOWNLOAD EXAMIANS APP
Physics Optical fibre works on the interference total internal reflection scattering principle of refraction interference total internal reflection scattering principle of refraction ANSWER DOWNLOAD EXAMIANS APP
Physics Two vectors are said to be equal if Both magnitude and direction are same Only their magnitudes are same Only their directions are same Magnitudes are same but directions are opposite Both magnitude and direction are same Only their magnitudes are same Only their directions are same Magnitudes are same but directions are opposite ANSWER DOWNLOAD EXAMIANS APP
Physics Magnetic field lines about a current-carrying wire Extend radially from the wire None of these Circle the wire in closed loops Both of these Extend radially from the wire None of these Circle the wire in closed loops Both of these ANSWER DOWNLOAD EXAMIANS APP
Physics Woollen cloth protects the body from cold because It is a good conductor of heat External heat rays enter into the body through the woollen cloth It reflects heat It is a poor conductor of heat It is a good conductor of heat External heat rays enter into the body through the woollen cloth It reflects heat It is a poor conductor of heat ANSWER DOWNLOAD EXAMIANS APP
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