ICS Part 2 Physics Chapter 18 Short Questions Preparation


12th Class Physics
Short Questions Preparation

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Online Short Questions For Chapter 7 "ICS Part 2 Physics Chapter 18 Short Questions Preparation "

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Physics - ICS Part 2 Physics Chapter 18 Short Questions Preparation

Question # 1

Give four application or uses of photodiode?

  • Ans 1: It is used as
    1. Detection of both visible and invisible radiations.
    2. Logic circuits
    3. Automatic switching
    4. Optical communication equipment
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Prepare Complete Set Wise Questions For Chapter 7 "ICS Part 2 Physics Chapter 18 Short Questions Preparation "

ICS Part 2 Physics Chapter 18 Short Questions Preparation - Set 1

Question # 1

Give four application or uses of photodiode?

  • Ans 1: It is used as
    1. Detection of both visible and invisible radiations.
    2. Logic circuits
    3. Automatic switching
    4. Optical communication equipment
Submit

ICS Part 2 Physics Chapter 18 Short Questions Preparation - Set 2

Question # 1

What is photodiode?Write down its two main applications.

  • Ans 1: Photodiode is used for the detection of light.It is used in reverse biased state.Reverse current increase with the intensity of incident light.When no light incidents then reverse current will be negligble.It is used as
    1. Detection of both visible and and invisible radiations
    2. Automatic switching
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ICS Part 2 Physics Chapter 18 Short Questions Preparation - Set 3

Question # 1

Write a note on LED.

  • Ans 1: Light emitting diode are made from the special semiconductor such as gallium arsenide and gallium arsenide phosphide in which the potential barrier between p and n side is such that when electrons combines with a hole during forward biased conduction,a photon of visible light is emitted.
    LED are used in 7-segment display,small light sources etc.
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ICS Part 2 Physics Chapter 18 Short Questions Preparation