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Two statements are given-one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below.
ASSERTION(A): The electrical conductivity of a semiconductor increases on doping.
REASON: Doping always increases the number of electrons in the semiconductor.
ASSERTION(A): The electrical conductivity of a semiconductor increases on doping.
REASON: Doping always increases the number of electrons in the semiconductor.
- a)Both A and R are true and R is the correct explanation of A
- b)Both A and R are true and R is NOT the correct explanation of A
- c)A is true but R is false
- d)A is false and R is also false
Correct answer is option 'C'. Can you explain this answer?
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Two statements are given-one labelled Assertion (A) and the other labe...
Assertion and Reasoning Explanation:
Assertion (A): The electrical conductivity of a semiconductor increases on doping.
Reason (R): Doping always increases the number of electrons in the semiconductor.
Explanation:
- Doping in a semiconductor involves intentionally adding impurities to alter its electrical properties.
- When a semiconductor is doped with impurities, it introduces either extra electrons (n-type doping) or electron deficiencies called "holes" (p-type doping) into the semiconductor lattice.
- In n-type doping, for example, the added electrons increase the number of charge carriers in the material, leading to higher electrical conductivity.
- Similarly, in p-type doping, the presence of holes allows for increased movement of charge carriers, also enhancing electrical conductivity.
- Therefore, it is correct to say that the electrical conductivity of a semiconductor increases on doping, as it introduces more charge carriers into the material.
- However, the reason provided that "Doping always increases the number of electrons in the semiconductor" is not entirely accurate, as doping can also introduce holes depending on the type of doping used.
- Hence, while the assertion is true, the reason is false, making the correct answer option 'c' - "A is true but R is false."
This explanation clarifies the relationship between doping and electrical conductivity in semiconductors, highlighting the impact of different doping mechanisms on the material's properties.
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Two statements are given-one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below.ASSERTION(A): The electrical conductivity of a semiconductor increases on doping.REASON: Doping always increases the number of electrons in the semiconductor.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true and R is NOT the correct explanation of Ac)A is true but R is false d)A is false and R is also false Correct answer is option 'C'. Can you explain this answer?
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Two statements are given-one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below.ASSERTION(A): The electrical conductivity of a semiconductor increases on doping.REASON: Doping always increases the number of electrons in the semiconductor.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true and R is NOT the correct explanation of Ac)A is true but R is false d)A is false and R is also false Correct answer is option 'C'. Can you explain this answer? for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Question and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus. Information about Two statements are given-one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below.ASSERTION(A): The electrical conductivity of a semiconductor increases on doping.REASON: Doping always increases the number of electrons in the semiconductor.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true and R is NOT the correct explanation of Ac)A is true but R is false d)A is false and R is also false Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two statements are given-one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below.ASSERTION(A): The electrical conductivity of a semiconductor increases on doping.REASON: Doping always increases the number of electrons in the semiconductor.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true and R is NOT the correct explanation of Ac)A is true but R is false d)A is false and R is also false Correct answer is option 'C'. Can you explain this answer?.
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