Day 399: MHT-CET Physics

1. A.
   The emitter-base junction is reversed biased in n-p-n transistor.
2. B.
   The emitter injects minority carriers into the base region of the p-n-p transistor.
3. C.
   The emitter injects holes into the base of the p-n-p transistor and electrons into the base region of n-p-n transistor.
4. D.
   The emitter injects the base of n-p-n transistor.

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1. A.
   $M_O C^2$
2. B.
   $(M_O - 8M_p)C^2$
3. C.
   $(M_O - 17M_N)C^2$
4. D.
   $(M_0 - 8M_P - 9M_N)C^2$

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1. A.
   $\sqrt{3}$ m
2. B.
   $3\sqrt{3}$ m
3. C.
   $\sqrt{2}$ m
4. D.
   $2\sqrt{2}$ m

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1. A.
   $1:1$
2. B.
   $\left(\frac{\pi}{6}\right)^{2/3}$
3. C.
   $\left(\frac{\pi}{6}\right)^{1/3}$
4. D.
   $\frac{4\pi}{3}:1$

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1. A.
   $\frac{1-\gamma}{1+\gamma}$
2. B.
   $\frac{1+\gamma}{1-\gamma}$
3. C.
   $\frac{\gamma-1}{R}$
4. D.
   $\frac{R}{\gamma-1}$

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