Physics Tungsten is used for the manufacture of the filament of an electric bulb, because It has a very high melting point It is economical It is malleable It is a good conductor It has a very high melting point It is economical It is malleable It is a good conductor ANSWER DOWNLOAD EXAMIANS APP
Physics Proton carry a Positive Charge Negative Charge Neutral Charge Variable Charge Positive Charge Negative Charge Neutral Charge Variable Charge ANSWER DOWNLOAD EXAMIANS APP
Physics A car accelerates uniformly from 18 kmph to 72 kmph in 5 s. The acceleration of the car (in m/s2) is: 3 5 6 7 3 5 6 7 ANSWER DOWNLOAD EXAMIANS APP
Physics To resolve an object in an electron microscope, None of these The wavelength of the electrons must be close to the diameter of the object Both A & B The wavelength of the electrons must be greater than the diameter of the object. None of these The wavelength of the electrons must be close to the diameter of the object Both A & B The wavelength of the electrons must be greater than the diameter of the object. ANSWER DOWNLOAD EXAMIANS APP
Physics What should a person on a freely rotating turn table do to decrease his (angular) speed ? Raise his hands up Bring his hands together Spread his hands outwards Sit down with raised hands Raise his hands up Bring his hands together Spread his hands outwards Sit down with raised hands ANSWER DOWNLOAD EXAMIANS APP
Physics Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to: The heating effect of current alone Intense sunlight at noon Both the heating effect of current and hysteresis loss Hysteresis loss alone The heating effect of current alone Intense sunlight at noon Both the heating effect of current and hysteresis loss Hysteresis loss alone ANSWER DOWNLOAD EXAMIANS APP
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