Day 160: MHT-CET Physics

1. A.
   the base emitter junction is reverse biased.
2. B.
   the input impedance is high and the output impedance is low.
3. C.
   input signal is applied between the base and emitter and the output is obtained between collector and emitter.
4. D.
   the input voltage and the output voltage are in phase.

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1. A.
   $\frac{\beta}{\alpha}$
2. B.
   $\alpha\beta$
3. C.
   $\alpha$
4. D.
   $\beta$

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1. A.
   $8.692 \times 10^{3}\text{ }Wb$
2. B.
   $70 \times 10^{2}\text{ }Wb$
3. C.
   $3.5 \times 10^{2}\text{ }Wb$
4. D.
   $35 \times 10^{3}\text{ }Wb$

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1. A.
   $\frac{\rho}{\rho - \sigma}$
2. B.
   $\frac{h\sigma}{(\rho - \sigma)}$
3. C.
   $\frac{\sigma}{(\rho - \sigma)}$
4. D.
   $\frac{h\rho}{(\rho - \sigma)}$

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1. A.
   the potential is same everywhere.
2. B.
   there is an electric field at the junction directed from the p-type side to the n-type side.
3. C.
   there is an electric field at the junction directed from the n-type side to p-type side.
4. D.
   the p-type side is at higher potential than the n-type side.

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