Physics When a piece of pure silicon is doped with aluminium, then The doped silicon piece will become n-type The doped silicon piece will become p-type The resistivity of the doped silicon piece will increase The conductivity of the doped silicon piece will remain the same The doped silicon piece will become n-type The doped silicon piece will become p-type The resistivity of the doped silicon piece will increase The conductivity of the doped silicon piece will remain the same ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is used for regulated electric supply ? Tunnel diode Junction diode Zener diode Gun diode Tunnel diode Junction diode Zener diode Gun diode ANSWER DOWNLOAD EXAMIANS APP
Physics What is the reason for formation of Mirage in desert? Reflection of light Total internal reflection of light Refraction of light Both Refraction and Total internal reflection of light Reflection of light Total internal reflection of light Refraction of light Both Refraction and Total internal reflection of light ANSWER DOWNLOAD EXAMIANS APP
Physics The refractive index of a transparent medium is maximum for Red light Yellow light Green light Violet light Red light Yellow light Green light Violet light ANSWER DOWNLOAD EXAMIANS APP
Physics In a bipolar junction transistor The emitter has the least concentration of impurity All the three regions (the emitter, the base and the collector) have equal concentrations of impurity The base has the least concentration of impurity The collector has the least concentration of impurity The emitter has the least concentration of impurity All the three regions (the emitter, the base and the collector) have equal concentrations of impurity The base has the least concentration of impurity The collector has the least concentration of impurity ANSWER DOWNLOAD EXAMIANS APP
Physics Optic fibres are used in : Endoscopy Ultrasound scans X-ray photos CAT scans Endoscopy Ultrasound scans X-ray photos CAT scans ANSWER DOWNLOAD EXAMIANS APP
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