Physics When a ring of metal is heated what happens to its hole ? Contracts It expands or contracts according to its diameter Expands It expands or contracts according to its coefficient of expansion Contracts It expands or contracts according to its diameter Expands It expands or contracts according to its coefficient of expansion ANSWER DOWNLOAD EXAMIANS APP
Physics A current carrying conductor is associated with An electric field An electro-magnetic field An electrostatic field A magnetic field An electric field An electro-magnetic field An electrostatic field A magnetic field ANSWER DOWNLOAD EXAMIANS APP
Physics A decibel is A musical note A measure of sound level The wavelength of noise A musical instrument A musical note A measure of sound level The wavelength of noise A musical instrument ANSWER DOWNLOAD EXAMIANS APP
Physics The instrument that measures and records the relative humidity of air is Lactometer Hydrometer Hygrometer Barometer Lactometer Hydrometer Hygrometer Barometer ANSWER DOWNLOAD EXAMIANS APP
Physics Rainbow is due to ionisation of water deposits absorption of sunlight in minute water droplets refraction and reflection of sunlight by water droplets diffusion of sunlight through water droplets ionisation of water deposits absorption of sunlight in minute water droplets refraction and reflection of sunlight by water droplets diffusion of sunlight through water droplets ANSWER DOWNLOAD EXAMIANS APP
Physics Alternating current is converted into direct current by a Transformer Rectifier Oscillator Dynamo Transformer Rectifier Oscillator Dynamo ANSWER DOWNLOAD EXAMIANS APP
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