In an npn transistor, the collector current is 24 mA. If 80% of electrons reach collector, its base current in mA is ______.
- A0.54 s
- ✓8.64 s
- C36
- D1.08 s
Answer: B.
View full solution →Question types
MHT-CET PCB 02 question types
200 questions across 1 question group — pick any mix to generate a MHT - CET paper with step-by-step answer keys.
200
Questions
1
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5
Question types
Sample Questions
MHT-CET PCB 02 questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
In switching circuit, transistor is in $O N$ state. Values of $I_C$ and $I_B$ are 5.2 mA and $10 \mu \mathrm{A}$ respectively and value of $R_C$ is 1 $\mathrm{k} \Omega$. If $\mathrm{V}_{\mathrm{CC}}$ is at 5.5 V , then $\mathrm{V}_{\mathrm{CE}}$ is _____.
- A0.1 V
- ✓0.3 V
- C0.0 V
- D0.2 V
Answer: B.
View full solution →The diagram shows the path of four `alpha` - particles of the same energy being scattered by the nucleus of an atom simultaneously. Which of these are/is not physically possible?
- A2 and 3
- ✓4 only
- C3 and 4
- D1 and 4
Answer: B.
View full solution →The radius of electron's second stationary orbit in Bohr's atom is R. The radius of the third orbit will be ______
- A9 R
- B3 R
- ✓2.25 R
- D`"R"/3`
Answer: C.
View full solution →A metal surface is illuminated by photons of energy 5 eV and 2.5 eV respectively. The ratio of their wavelengths is ____________.
- A2 : 1
- B1 : 3
- C1 : 4
- ✓1 : 2
Answer: D.
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