Physics What is the principle of a ''Life Jacket"? The person can sit on it like a raft It decreases the volume of the person to keep him afloat It provides oxygen to a drowning person It increases the volume of the person to keep him afloat The person can sit on it like a raft It decreases the volume of the person to keep him afloat It provides oxygen to a drowning person It increases the volume of the person to keep him afloat ANSWER DOWNLOAD EXAMIANS APP
Physics Optical fiber works on the principle of Refraction Scattering Total internal reflection Interference Refraction Scattering Total internal reflection Interference ANSWER DOWNLOAD EXAMIANS APP
Physics In beta decay what is emitted All of these Neutron Electron Proton All of these Neutron Electron Proton ANSWER DOWNLOAD EXAMIANS APP
Physics A hunter on the ground wishes to shoot a bird on a tree at a distance with his rifle. He has to point the rifle At the lower elevation than the bird In the same direction as the bird At a higher elevation than the bird Vertically upwards At the lower elevation than the bird In the same direction as the bird At a higher elevation than the bird Vertically upwards ANSWER DOWNLOAD EXAMIANS APP
Physics Heavy water is used in nuclear reactor to Absorb neutron Increase speed of neutron Increase temperature Slow down neutron Absorb neutron Increase speed of neutron Increase temperature Slow down neutron ANSWER DOWNLOAD EXAMIANS APP
Physics On which of the following techniques photostate machine works ? Thermal Image—Making Electrostatic Image—Making Magnetic Image—Making Electromagnetic Image— Making Thermal Image—Making Electrostatic Image—Making Magnetic Image—Making Electromagnetic Image— Making ANSWER DOWNLOAD EXAMIANS APP