Physics In a bipolar junction transistor The collector has the least concentration of impurity The emitter has the least concentration of impurity The base has the least concentration of impurity All the three regions (the emitter, the base and the collector) have equal concentrations of impurity The collector has the least concentration of impurity The emitter has the least concentration of impurity The base has the least concentration of impurity All the three regions (the emitter, the base and the collector) have equal concentrations of impurity ANSWER DOWNLOAD EXAMIANS APP
Physics A stone floor feels cold to the bare feet but a carpet on the same floor feels warm. This is because The floor and carpet are at different temperatures The stone conveys the heat away from the feet more rapidly than the carpet The carpet is a better conductor of heat than the stone The human body maintains a constant temperature The floor and carpet are at different temperatures The stone conveys the heat away from the feet more rapidly than the carpet The carpet is a better conductor of heat than the stone The human body maintains a constant temperature ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following has the longest wavelength? X-ray radiation Ultraviolet radiation Visible radiation Infrared radiation X-ray radiation Ultraviolet radiation Visible radiation Infrared radiation ANSWER DOWNLOAD EXAMIANS APP
Physics The magnifying power of an astronomical telescope can be decreased by Increasing the focal length of the objective None of these Decreasing the focal length of the eyepiece Increasing the focal length of the eyepiece Increasing the focal length of the objective None of these Decreasing the focal length of the eyepiece Increasing the focal length of the eyepiece ANSWER DOWNLOAD EXAMIANS APP
Physics Electromagnetic waves are transverse in nature is evident by Diffraction Interference Polarisation Reflection Diffraction Interference Polarisation Reflection ANSWER DOWNLOAD EXAMIANS APP
Physics The mass defect is the result of what action occurring? Protons and electrons being attracted to each other Energy being converted into moles of atoms when neutrons break apart protons Mass being converted to energy when protons and neutrons break apart in a nucleus Mass being converted to energy when protons and neutrons bind together in a nucleus Protons and electrons being attracted to each other Energy being converted into moles of atoms when neutrons break apart protons Mass being converted to energy when protons and neutrons break apart in a nucleus Mass being converted to energy when protons and neutrons bind together in a nucleus ANSWER DOWNLOAD EXAMIANS APP
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