NEET
- Exam
- NEET
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- Physics
- Chapter
- Alternating Current
NEET · Physics · Alternating Current
Given below are two statements: one is labelled as Assertion (A)...
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Smaller the band width, sharper the resonance and easier it is to tune an LCR circuit.
Reason (R) : Resonant frequency is arithmetic mean of half power frequencies.
In the light of the above statements, choose the most appropriate answer from the options given below:
Options
- ABoth (A) and (R) are true and (R) is the correct explanation of (A).
- BBoth (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 but (R) is true.
Correct answer
B. Both (A) and (R) are true and (R) is NOT the correct explanation of (A).
Step-by-step solution
Assertion (A) states that a smaller bandwidth leads to sharper resonance and easier tuning of an LCR circuit, which is true. A smaller bandwidth means a sharper peak in the resonance curve.
Reason (R) claims that the resonant frequency is the arithmetic mean of half-power frequencies, which is also true. However, this does not directly explain why a smaller bandwidth results in sharper resonance.
Thus, while both statements are true, the reason does not effectively explain the assertion. Therefore, the correct choice is:
(2) Both (A) and (R) are true and (R) is NOT the correct explanation of (A).