ICS Part 2 Physics Chapter 18 Short Questions Preparation

Question # 1

What is principle of vital ground?

Ans 1: In an operational amplifier ,if the non inverting terminal is grounded by the concept of virtual ground the inverting terminal is also at ground potential though there is no physical connection between the inverting terminal and the ground,This is the principle of virtual ground.

Question # 2

What is the net charge on a n-type or p-type substance?

Ans 1: Since they are electrically neutral substance,So the net charge on them is zero.

Question # 3

What is meant by rectification?

Ans 1: The conversing of alternating current signal into pulsating direct current signal is called rectification.The current for this purpose is called rectifier circuit.

Question # 4

What do LED and LASER stand for?

Ans 1: LED stands for light emitting diode..
Laser stands for light amplification stimulated emission radiation .

Question # 5

Differentiate between the forward biased and the reserve biase.

Ans 1: When p side is positive and n-side is negative,the diode is forward biased.The width of depletion region reduces to which more current is allowed to flow across the junction.The forward resistance is few ohms.
Ans 2: When p side is negative and n side is positive,the diode is reserved biased.The width of depletion region is increased and a very small current flows across the junction due to flow of minority charges carriers,The resistance offered by the diode is several mega ohms.

Question # 6

Define logic system and logic gates.

Ans 1: A digital system deals with the quantities or variable which have only two discrete values or state.
The electronic circuits which implements the various logic operation are known as logic gates.

Question # 7

What is OP-GATE?

Ans 1: OR-GATE implements the logic of OR operation.It has two or more inputs and a single output.Its output will be zero only when all the inputs are zero.

Question # 8

What is AND Gate?

Ans 1: It is a logic gate that implements the truth table of AND operations.It has two or more input and single output.

Question # 9

What is photovoltaic cell?Discuss its working?

Ans 1: It consists of a thick n type region covered by a thin p-layer type.When exposed to light,it absorbs photon which generated electron-hole pairs.The electric field at the junction moves electron and holes and a current flow through the external circuit.And this current is directly proportional to the intensity of light.

Question # 10

What is the effect of forward biased and reverse biasing of a diode on the width of depletion region?

Ans 1: When forward biased then the width of depletion region decreases and when reverse biased then the width of depletion region increase.

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ICS Part 2 Physics Chapter 18 Short Questions Preparation

12th Class PhysicsShort Questions Preparation

12th Class Physics Chapter Wise Preparation

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

Physics - ICS Part 2 Physics Chapter 18 Short Questions Preparation

What is principle of vital ground?

What is the net charge on a n-type or p-type substance?

What is meant by rectification?

What do LED and LASER stand for?

Differentiate between the forward biased and the reserve biase.

Define logic system and logic gates.

What is OP-GATE?

What is AND Gate?

What is photovoltaic cell?Discuss its working?

What is the effect of forward biased and reverse biasing of a diode on the width of depletion region?

Prepare Complete Set Wise Questions For Chapter 7 "ICS Part 2 Physics Chapter 18 Short Questions Preparation "

Set 1

Set 2

Set 3

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

What is principle of vital ground?

What is the net charge on a n-type or p-type substance?

What is meant by rectification?

What do LED and LASER stand for?

Differentiate between the forward biased and the reserve biase.

Define logic system and logic gates.

What is OP-GATE?

What is AND Gate?

What is photovoltaic cell?Discuss its working?

What is the effect of forward biased and reverse biasing of a diode on the width of depletion region?

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

Differentiate between the forward biased and the reserve biase.

Explain why an ordinary Silicon diode does not emit light.

What is the potential barrier?What is the value of potential barrier of SI and Ge?

Define logic system and logic gates.

Why charge carriers are not present in the depletion region?

What is meant by rectification?

What is OP-GATE?

The anode of a diode is 0.2V positive with respect to the cathode,It it forward biased?

Give four application or uses of photodiode?

How the normal operation of transistor is achieved?

ICS Part 2 Physics Chapter 18 Short Questions Preparation - Set 3

Give two applications of gated in control system.

Write a note on LED.

Why is the photodiode operated in reverse biased state?

Differentiate between the forward biased and the reserve biase.

What is semiconductor diode?

What is photovoltaic cell?Discuss its working?

Explain why an ordinary Silicon diode does not emit light.

The anode of a diode is 0.2V positive with respect to the cathode,It it forward biased?

How the normal operation of transistor is achieved?

Define current of gain of a transistor

ICS Part 2 Physics Chapter 18 Short Questions Preparation

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