Introductory Electronics – Online MCQs – Physics 10th

1. Electronic devices are:

2. There are ______ basic logic gates.

3. For a NOR gate, the output will be 0 if:

4. Modern colour TVs have __________ electron guns.

5. The cathode ray carry:

6. Boolean expression of the OR operation is:

7. ADC circuit converts:

8. In a electron gun, to accelerate the electrons, the anode is connected to:

9. Application of a NOT gate at the output of OR gate then we will get:

10. For OR gate, A + B + C = 0 if:

11. The process of emission of electrons from the hot metal surface is called:

12. Metals are good conductors of electricity because they have free.

13. The fluorescent screen of the cathode ray oscilloscope is coated with a fluorescent salt such as:

14. This logical gate is known as the invertor.

15. Thermionic emission is the emission of electrons from a hot:

16. When anyone of inputs is at 1, the value of the output of OR gate will be:

17. The electric field can be detected:

18. Non-continuous quantities are called:

19. In an electric field, the energy and speed of the electron beam:

20. CRO means