Physics Class 10 Practical 34 Important Conceptual Viva Questions with Answers (To verify the truth table of OR, AND, NOT, NOR and NAND gates)

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Conceptual Viva Questions and Answers

Question 1: What is a logic gate? 
Answer: A logic gate is an electronic device that performs a basic logical function such as AND, OR, or NOT on one or more binary inputs to produce a single binary output.

Question 2: What is the function of an OR gate? 
Answer: An OR gate outputs true (1) if at least one of its inputs is true (1); otherwise, it outputs false (0).

Question 3: How can you verify the truth table of an OR gate? 
Answer: To verify the truth table of an OR gate, apply all possible input combinations (00, 01, 10, 11) and observe that the output is true (1) for any combination with at least one true (1) input.

Question 4: What is the function of an AND gate? 
Answer: An AND gate outputs true (1) only if all its inputs are true (1); otherwise, it outputs false (0).

Question 5: How can you verify the truth table of an AND gate? 
Answer: To verify the truth table of an AND gate, apply all possible input combinations (00, 01, 10, 11) and observe that the output is true (1) only when both inputs are true (1).

Question 6: What is the function of a NOT gate? 
Answer: A NOT gate, also known as an inverter, outputs the opposite value of its input; it outputs true (1) if the input is false (0) and false (0) if the input is true (1).

Question 7: How can you verify the truth table of a NOT gate? 
Answer: To verify the truth table of a NOT gate, apply both possible input values (0 and 1) and observe that the output is the opposite of the input.

Question 8: What is the function of a NOR gate? 
Answer: A NOR gate outputs true (1) only if all its inputs are false (0); otherwise, it outputs false (0). It is the inverse of an OR gate.

Question 9: How can you verify the truth table of a NOR gate? 
Answer: To verify the truth table of a NOR gate, apply all possible input combinations (00, 01, 10, 11) and observe that the output is true (1) only when all inputs are false (0).

Question 10: What is the function of a NAND gate? 
Answer: A NAND gate outputs true (1) if at least one of its inputs is false (0); otherwise, it outputs false (0). It is the inverse of an AND gate.

Question 11: How can you verify the truth table of a NAND gate? 
Answer: To verify the truth table of a NAND gate, apply all possible input combinations (00, 01, 10, 11) and observe that the output is false (0) only when both inputs are true (1).

Question 12: Why is it important to verify the truth tables of logic gates? 
Answer: Verifying the truth tables of logic gates is important to ensure that the gates are functioning correctly and to understand their behavior in digital circuits.

Question 13: How do logic gates form the basis of digital circuits? 
Answer: Logic gates are the fundamental building blocks of digital circuits, performing basic logical operations that combine to form complex computational functions in digital devices.

Question 14: Can a combination of logic gates be used to create any other gate or logical function? 
Answer: Yes, combinations of basic logic gates (AND, OR, NOT) can be used to create any other logical gate or function, making them versatile in digital circuit design.