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The brightness of LED can be controlled by

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Important Questions on Semiconductors

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Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 197
In LED, to avoid damage to the diode .............. is used.
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Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 198
Choose the INCORRECT statement.
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Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 201
The schematic symbol of light emitting diode is (LED)  
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Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 203
An LED is constructed from a p-n junction based on a certain semiconducting material whose energy gap is 1.9 eV. Then, the wavelength of the emitted light is,
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Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 204
A light-emitting diode has a voltage drop of 2 V across it and passes a current of 10 μA. when it operates with a 6 V battery through a limiting resistor R, the value of R is
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Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 205
The I - V characteristics of an LED is:
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Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 206
Which one of the following devices does not respond to the intensity of light incident on it?
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Physics Crash Course MHT-CET>Chapter 24 - Semiconductors>Exercise 1>Q 207
The IV characteristic of an LED is,