Symbol for photo-diode is

Important Questions on Semiconductors

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Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 217

In a$p-n$ junction photo cell, the value of photo-electromotive force produced by monochromatic light is proportional to

MEDIUM

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IMPORTANT

Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 218

For a photodiode, the forbidden energy gap $\left(E_{\mathrm{g}}\right)$ of the material used is $2.8 \mathrm{eV}$ and wavelength of radiation $\left(\lambda \right)$ incident on it is $5780 \stackrel{\circ }{\mathrm{A}}$. Then, the emission of electrons is possible when incident radiation has,

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Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 234

In a transistor, the emitter current is

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Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 236

The transistors provide good power amplification when they are used in

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Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 240

$NPN$ and $PNP$ bipolar transistors can be used as ON/OFF switch

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IMPORTANT

Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 241

Transistors can work as a switch in

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Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 243

Transistor switch is an essential component of

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IMPORTANT

Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 250

In a common emitter transistor amplifier, $\mathrm{\beta }=60$, ${\mathrm{R}}_0=5000 \mathrm{\Omega }$ and internal resistance of a transistor is $500 \mathrm{\Omega }$. The voltage amplification of the amplifier will be