Physics In a conductor The forbidden energy gap is very narrow The forbidden energy gap is very wide There is no conduction band The valence band and the conduction band overlap each other The forbidden energy gap is very narrow The forbidden energy gap is very wide There is no conduction band The valence band and the conduction band overlap each other ANSWER DOWNLOAD EXAMIANS APP
Physics In a railway track, two rails are joined end to end with a gap in between them because Steel can be saved Accidents due to expansion in summer can be avoided Air-gaps are necessary for bearing the weight of running train Accidents due to contraction in winter can be avoided Steel can be saved Accidents due to expansion in summer can be avoided Air-gaps are necessary for bearing the weight of running train Accidents due to contraction in winter can be avoided ANSWER DOWNLOAD EXAMIANS APP
Physics The device used to change the speed of an electric fan is Regulator Rectifier Switch Amplifier Regulator Rectifier Switch Amplifier ANSWER DOWNLOAD EXAMIANS APP
Physics Optical fibre works on the total internal reflection principle of refraction scattering interference total internal reflection principle of refraction scattering interference ANSWER DOWNLOAD EXAMIANS APP
Physics Pitot tube is used to measure Dynamic pressure Static pressure Stagnation pressure Velocity at stagnation point Dynamic pressure Static pressure Stagnation pressure Velocity at stagnation point ANSWER DOWNLOAD EXAMIANS APP
Physics On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because: density of mercury is greater than that of water. mercury is a metal. cohesion of mercury is greater than its adhesion with glass. cohesion of water is greater than its adhesion with glass. density of mercury is greater than that of water. mercury is a metal. cohesion of mercury is greater than its adhesion with glass. cohesion of water is greater than its adhesion with glass. ANSWER DOWNLOAD EXAMIANS APP