Day 249: JEE Mains Physics

1. A.
   Both cut-off and Saturation
2. B.
   Saturation region only
3. C.
   Cut-off region only
4. D.
   The active region only

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1. A.
   $4.1 \times 10^{8}\text{ }s$
2. B.
   $4.5 \times 10^{10}\text{ }s$
3. C.
   $3.5 \times 10^{6}\text{ }s$
4. D.
   $7.2 \times 10^{8}\text{ }s$

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1. A.
   $3 \times 10^{5}\text{ }m{\text{ }s}^{- 1}$
2. B.
   $4 \times 10^{5}\text{ }m{\text{ }s}^{- 1}$
3. C.
   $6.25 \times 10^{5}\text{ }m{\text{ }s}^{- 1}$
4. D.
   None

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