Punjab 10th Class Physics Chapter 7 Basic Electronics Mcqs Test Online

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Question 1 of 20

Physics

1. The process by which electrons are emitted by a hot metal surface is known as:

1.Conduction

2.Evaporation

3.Thermionic emission

4.Boiling

Question 1 of 20

Question 2 of 20

2. The output of an OR gate would be 0 when:

1.One of its two inputs is zero

2.Any one of its two inputs is 1

3.Both of its input are 0

4.Both of its inputs are 1

Question 2 of 20

Question 3 of 20

3. The particles emitted from a hot cathode surface are:

1.Positive ions

2.Electrons

3.Protons

4.Negative ions

Question 3 of 20

Question 4 of 20

4. Those quantities whose values very continuously or remains constant are called:

1.Light quantities

2.Vector quantities

3.Scalar quantities

4.Analogue quantities

Question 4 of 20

Question 5 of 20

5. In a n-type crystal, the majority carriers are:

1.Positron

2.Holes

3.Free electors

4.Protons

Question 5 of 20

Question 6 of 20

6. The output of an AND gate is only 1 when:

1.Both of its inputs are 1

2.Anyone of the two

3.Both of its inputs are 0

4.Any one of the two inputs is 0

Question 6 of 20

Question 7 of 20

7. The logical operation performed by this gate is:

1.OR

2.AND

3.NAND

4.NOR

Question 7 of 20

Question 8 of 20

8. Which is not a true statement?

1.Germanium has four electrons is its valence shell

2.Germanium crystal acts as insulator in its purest form

3.Germanium forms covalent bond by sharing four electrons

4.Germanium is the member of 6th group of periodic table

Question 8 of 20

Question 9 of 20

9. Which of the following is an insulator?

1.Plastic

2.Silicon

3.Aluminium

4.Copper

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Question 10 of 20

10. Which is the semi conductor:

1.Germanium

2.Iron

3.Gold

4.Silver

Question 10 of 20

Question 11 of 20

11. The branch of applied physics in which we control the flow of electrons using diodes, transistors and other semi conductor devices in order to meet our various requirements is called:

1.Electricity

2.Metaphysics

3.Electronics

4.Mechanics

Question 11 of 20

Question 12 of 20

12. The output of a NAND gate is 0 when:

1.Both of its inputs are 0

2.Any of its inputs is 0

3.Any of its inputs is 1

4.Both of its inputs are 1

Question 12 of 20

Question 13 of 20

13. The two inputs of a NAND gate are A and B. Its output would be 0 when:

1.A = 0, B = 0

2.A = 0, B = 0

3.A = 1, B = 0

4.A = 1, B = 1

Question 13 of 20

Question 14 of 20

14. Which statement is not true:

1.Amplifier is an analogue circuit

2.Temperature is an analogue quantity

3.Amplifier is not an analogue circuit

4.Microphone converts sound into electric potential

Question 14 of 20

Question 15 of 20

15. Atomic number of silver is 47, the number of its valence electrons would be _________.

1.2

2.8

3.32

4.18

Question 15 of 20

Question 16 of 20

16. If X = A.B, then X is 1 when:

1.A is 1 and B is 0

2.A and B are 1

3.A or B is 0

4.A is 0 and B is 1

Question 16 of 20

Question 17 of 20

17. Which statement is not true about semi-conductor:

1.They are not good conductors in their purest form

2.Hexavalent impurity is usually added in them

3.They are not of such practical use is this state.

4.The number of electron can be added according to our requirement

Question 17 of 20

Question 18 of 20

18. The output of a two-input NOR gate is 1 when:

1.Both A and B are 0

2.A is 1 and B is 0

3.A is 0 and B is 1

4.Both A and B are 1

Question 18 of 20

Question 19 of 20

19. AND gate can be formed by using two:

1.NOT gates

2.OR gates

3.NAND gates

4.NOR gates

Question 19 of 20

Question 20 of 20

20. A and B are the two input of a NAND gate. Its output would be 1 when:

1.A = 0, B = 0

2.A = 0, B = 0

3.A = 1, B = 0

4.A = 1, B = 1

Question 20 of 20

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