Physics In a bipolar junction transistor 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 The collector has the least concentration of impurity ANSWER DOWNLOAD EXAMIANS APP
Physics Which determines the frequency of a sound wave? Medium Amplitude Speed Source Medium Amplitude Speed Source ANSWER DOWNLOAD EXAMIANS APP
Physics Fiber optics cable used in communication, works on the principle of Total internal reflection of light Refraction of light Diffuse reflection of light Regular reflection of light Total internal reflection of light Refraction of light Diffuse reflection of light Regular reflection of light ANSWER DOWNLOAD EXAMIANS APP
Physics The density of a gas is maximum at Low temperature, low pressure Low temperature, high pressure High temperature, low pressure High temperature, high pressure Low temperature, low pressure Low temperature, high pressure High temperature, low pressure High temperature, high pressure ANSWER DOWNLOAD EXAMIANS APP
Physics What is the wavelength of visible spectrum ? 3900 A° – 7600 A° 8500 A° – 9800 A° 7800 A° – 8000 A° 1300 A°–3000 A° 3900 A° – 7600 A° 8500 A° – 9800 A° 7800 A° – 8000 A° 1300 A°–3000 A° ANSWER DOWNLOAD EXAMIANS APP
Physics In Astrophysics, what name is given to a hypothetical hole in outer space from which stars and energy emerge? Asteroid belt Ozone hole Black hole White hole Asteroid belt Ozone hole Black hole White hole ANSWER DOWNLOAD EXAMIANS APP
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