Physics In a bipolar junction transistor The collector 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 emitter has the least concentration of impurity The collector 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 emitter has the least concentration of impurity ANSWER DOWNLOAD EXAMIANS APP
Physics Rectifiers are used to convert: High voltage to low voltage Direct current to Alternating current Alternating current to Direct current Low voltage to high voltage High voltage to low voltage Direct current to Alternating current Alternating current to Direct current Low voltage to high voltage ANSWER DOWNLOAD EXAMIANS APP
Physics A stone is dropped from the roof of a house towards the ground. The kinetic energy of the stone will be maximum: When it touches the ground When it is just on the half-way Just after it is dropped Just before it touches the ground When it touches the ground When it is just on the half-way Just after it is dropped Just before it touches the ground ANSWER DOWNLOAD EXAMIANS APP
Physics The blue colour of sky is due to Scattering of shorter wavelengths of sunlight in the atmosphere Scattering of longer wavelengths of sunlight in the atmosphere Reflection of sunlight Refraction of sunlight Scattering of shorter wavelengths of sunlight in the atmosphere Scattering of longer wavelengths of sunlight in the atmosphere Reflection of sunlight Refraction of sunlight ANSWER DOWNLOAD EXAMIANS APP
Physics When a piece of stone is immersed in water, it displaces water of equal Volume Mass Specific gravity Density Volume Mass Specific gravity Density ANSWER DOWNLOAD EXAMIANS APP
Physics A mirage occurs because of Diffraction of light Total internal reflection by layers of air Interference of light Reflection by hot ground Diffraction of light Total internal reflection by layers of air Interference of light Reflection by hot ground ANSWER DOWNLOAD EXAMIANS APP
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