Physics Magnetic keepers are used to protect magnets from : Earth's magnetic field Self-demagnetization Effect of other magnets Demagnetization due to heating Earth's magnetic field Self-demagnetization Effect of other magnets Demagnetization due to heating ANSWER DOWNLOAD EXAMIANS APP
Physics On a stationary sail boat, air is blown from a fan attached to the boat. The boat moves in the same direction in which air blows moves in opposite direction in which the air is blown spins around does not move moves in the same direction in which air blows moves in opposite direction in which the air is blown spins around does not move ANSWER DOWNLOAD EXAMIANS APP
Physics Ball bearings are used in cycles, scooters etc to Reduce the friction between ground and the whee Increase the friction between the wheel and the axle None of these Reduce the friction between the wheel and the axle Reduce the friction between ground and the whee Increase the friction between the wheel and the axle None of these Reduce the friction between the wheel and the axle ANSWER DOWNLOAD EXAMIANS APP
Physics Electricity is transmitted over long distances It is cheaper It is safer There is less wastage of energy It is fast It is cheaper It is safer There is less wastage of energy It is fast ANSWER DOWNLOAD EXAMIANS APP
Physics When two semiconductors of pand n-type are brought in contact, they form p-n junction which acts like a/an Conductor Rectifier Amplifier Oscillator Conductor Rectifier Amplifier Oscillator ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following are used for accurately measuring very small time intervals ? Atomic clocks White dwarfs Quartz clocks Pulsars Atomic clocks White dwarfs Quartz clocks Pulsars ANSWER DOWNLOAD EXAMIANS APP
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