Question
When npn transistor is used as an amplifier:
✓
Answer
- Holes move from base to emitter.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
More "M.C.Q (1 Marks)" from Semiconductor Electronic: Material, Devices And Simple Circuits→Semiconductor Electronic: Material, Devices And Simple Circuits — all question types→Physics STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→
Similar questions
In a coil of self inductance 0.5 henry, the current varies at a constant rate from zero to 10 amperes in 2 seconds. The e.m.f. generated in the coil is(a) 10 volts(b) 5 volts(c) 2.5 volts(d) 1.25 volts
The dispersive power is maximum for the material(a) Flint glass(b) Crown glass(c) Mixture of both(d) None of the above
Assertion : The surface wave propagation is used for medium wave band and for television broadcasting.
Reason : The surface waves travel directly from transmitting antenna to receiver antenna through atmosphere.(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If the assertion and reason both are false.
Reason : The surface waves travel directly from transmitting antenna to receiver antenna through atmosphere.(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If the assertion and reason both are false.
Gauss’s law is true for.
The magnitude of $i$ in ampere unit is
→The speed of an electron having a wavelength of $10^{-10} \mathrm{~m}$ is
→The minimum temperature of a body at which it emits light is(a) 1200°C (b) 1000°C(c) 500°C (d) 200°C
The magnetic moment of a current carrying loop is $2.1 \times 10^{-25} \ce{amp \times m ^2}$. The magnetic field at a point on its axis at a distance of $1 \mathring A$ is
→A hollow double concave lens is made of very thin transparent material. It can be filled with air or either of two liquids $L_1$ and $L_2$ having refractive indices $n_1$ and $n_2$ respectively $\left(n_2>n_1>1\right)$. The lens will diverge a parallel beam of light if it is filled with
→The attenuation in optical fibre is mainly due to(a) Absorption(b) Scattering(c) Neither absorption nor scattering(d) Both (a) and (b)