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 Which of the following is the fastest communication channel? Optical fiber Microwave All are operating at nearly the same propagation speed Radio wave Optical fiber Microwave All are operating at nearly the same propagation speed Radio wave ANSWER DOWNLOAD EXAMIANS APP
Physics Shock-absorbers are usually made of steel as it : Has lower elasticity Is not brittle Has no ductile property Has higher elasticity Has lower elasticity Is not brittle Has no ductile property Has higher elasticity ANSWER DOWNLOAD EXAMIANS APP
Physics The potential difference between the terminals of an electric heater is 60 V when it draws a current of 4 A from the source. What current will the heater draw if the potential difference is increased to 127.5 V ? 24 A 8.5 A 0.41666666666667 24 A 8.5 A 0.41666666666667 ANSWER DOWNLOAD EXAMIANS APP
Physics When a detergent is added to pure water, its surface tension Remains constant Becomes infinite Decreases Increases Remains constant Becomes infinite Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Physics Which one of the following is not a property of electromagnetic waves? Electromagnetic waves do not show interference and diffraction. Electromagnetic waves are transverse waves Electromagnetic waves do not require a medium to propagate. Oscillating electric field and magnetic field are perpendicular to each other. Electromagnetic waves do not show interference and diffraction. Electromagnetic waves are transverse waves Electromagnetic waves do not require a medium to propagate. Oscillating electric field and magnetic field are perpendicular to each other. ANSWER DOWNLOAD EXAMIANS APP
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