Physics The law of conservation of energy states that Energy can neither be created nor destroyed Energy can neither be created or destroyed Energy can either be created nor destroyed Energy can either be created or destroyed Energy can neither be created nor destroyed Energy can neither be created or destroyed Energy can either be created nor destroyed Energy can either be created or destroyed ANSWER DOWNLOAD EXAMIANS APP
Physics To resolve an object in an electron microscope, Both A & B The wavelength of the electrons must be greater than the diameter of the object. The wavelength of the electrons must be close to the diameter of the object None of these Both A & B The wavelength of the electrons must be greater than the diameter of the object. The wavelength of the electrons must be close to the diameter of the object None of these ANSWER DOWNLOAD EXAMIANS APP
Physics An electron and a proton starting from rest get accelerated through potential difference of 100 kV. The final speed of the electron and the proton are Ve and Vp respectively. Which of the following relations is correct? Ve < Vp Ve = Vp Ve > Vp Cannot be determined Ve < Vp Ve = Vp Ve > Vp Cannot be determined ANSWER DOWNLOAD EXAMIANS APP
Physics A wire of copper having length I and area of cross-section A is taken and a current i is flown through it. The power dissipated in the wire is P. If we take an aluminium wire having same dimensions and pass the same current through it, the power dissipated will be P < P 2P > P P < P 2P > P ANSWER DOWNLOAD EXAMIANS APP
Physics Mirage is due to: Equal heating of different parts of the atmosphere Magnetic disturbances in the atmosphere Unequal heating of different parts of the atmosphere Depletion of ozone layer in the atmosphere Equal heating of different parts of the atmosphere Magnetic disturbances in the atmosphere Unequal heating of different parts of the atmosphere Depletion of ozone layer in the atmosphere ANSWER DOWNLOAD EXAMIANS APP
Physics It is difficult to cook rice Same anywhere At the top of a mountain Under a mine At the sea level Same anywhere At the top of a mountain Under a mine At the sea level ANSWER DOWNLOAD EXAMIANS APP
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