MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 13 - Semiconductors>Evaluation Test>Q 18

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IMPORTANT

Earn 100

The silicon diode in the circuit as shown in figure requires a minimum current of $2 mA$ to be above the knee point $0 \cdot 7 V$ of its $I - V$ characteristics. Assume that the voltage across the diode is independent of current above the knee point. The power dissipated in the resistance $R$ when a current of $2 mA$ flows in the circuit is

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Important Questions on Semiconductors

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 13 - Semiconductors>Classical Thinking>Q 33

In a semiconductor diode, reverse bias current is due to drift of free electrons and holes caused by

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 13 - Semiconductors>Classical Thinking>Q 48

Electron hole pairs are generated in a photodiode

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 13 - Semiconductors>Competitive Thinking>Q 66

For a transistor,

α_{dc}

and

β_{dc}

are the current ratios, then the value of

\frac{β_{d c} - α_{d c}}{α_{d c} \cdot β_{d c}}

is

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 13 - Semiconductors>Competitive Thinking>Q 74

In common base circuit of a transistor, current amplification factor is

0.95

. Calculate the emitter current if base current is

0.2 mA

,

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 13 - Semiconductors>Competitive Thinking>Q 91

In a transistor, if collector current is

25 mA

and base current is

1 mA

, then current amplification factor

α

is

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 13 - Semiconductors>Evaluation Test>Q 20

A transistor has

α = 0.96

. If the emitter current is

8 mA

, what are the values of collector and base currents?

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 13 - Semiconductors>Evaluation Test>Q 21

In an

n - p - n

transistor

10^{10}

electrons enter the emitter in

10^{- 6} s, 3 %

of the electrons are lost in the base. The current transfer ratio is

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 13 - Semiconductors>Evaluation Test>Q 23

The maximum wavelength which a photodiode can detect with

E_{g} = 0.74 eV

is,