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Physics · PYQ NEET UG 2016(2)

हिन्दी

Which of the following combinations should be selected for better tuning of an L-C-R circuit used for communication?

  1. A
    \( R = 25\ \Omega, L = 1.5\text{ H}, C = 45\ \mu\text{F} \)
  2. B
    \( R = 20\ \Omega, L = 1.5\text{ H}, C = 35\ \mu\text{F} \)
  3. C
    \( R = 25\ \Omega, L = 2.5\text{ H}, C = 45\ \mu\text{F} \)
  4. D
    \( R = 15\ \Omega, L = 3.5\text{ H}, C = 30\ \mu\text{F} \)
View Answer & Solution

Correct answer · Option D

\( R = 15\ \Omega, L = 3.5\text{ H}, C = 30\ \mu\text{F} \)

Explanation

Better tuning implies a high quality factor \(Q = \frac{1}{R}\sqrt{\frac{L}{C}}\(, which requires minimum R and maximum L.\)\)
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