MHT CET · Physics · Alternating Current
A \(20 \Omega\) resistance, 10 mH inductance coil and \(15 \mu \mathrm{~F}\) capacitor are joined in series. When a suitable frequency alternating current source is joined to this combination, the circuit resonates. If the resistance is made \(\frac{1}{3} \mathrm{rd}\), the resonant frequency
- A remains unchanged.
- B is doubled.
- C is quadrupled.
- D is halved.
Answer & Solution
Correct Answer
(A) remains unchanged.
Step-by-step Solution
Detailed explanation
The resonant frequency for an RLC series circuit is given by \(f_0 = \frac{1}{2\pi\sqrt{LC}}\). The resonant frequency is independent of the resistance (R).
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- A disc has mass \(M\) and radius \(R\). How much tangential force should be applied to the rim of the disc, so as to rotate with angular velocity ' \(\omega\) ' in time \(t\) ?MHT CET 2023 Medium
- Charges \(3 \mathrm{Q}, \mathrm{q}\) and Q are placed along x -axis at positions \(\mathrm{x}=0, \mathrm{x}=\frac{1}{3}\) and \(\mathrm{x}=1\) respectively. When the force on charge Q is zero, the value of \(q\) isMHT CET 2024 Easy
- A water film is formed between the two straight parallel wires, each of length 10
\(\mathrm{cm}\), kept at a separation of \(0 \cdot 5 \mathrm{~cm}\). Now, the separation between them is
increased by \(1 \mathrm{~mm}\) without breaking the water film.
The work done for this is
(surface tension of water \(=7 \cdot 2 \times 10^{-2} \mathrm{Nm}^{-1}\) )MHT CET 2020 Easy - A solid oylinder and a solid sphere having same mass and same radius roll down on the same inclined plane. The fatio of the acceleration of the cylinder ' \(\mathrm{a}_{\mathrm{c}}\) ' to that of sphere ' \(\mathrm{a}_{\mathrm{s}}\) ' isMHT CET 2023 Medium
- In Young's double slit experiment, the distance between the two coherent sources is ' d ' and the distance between the source and screen is ' D '. When the wavelength ( \(\lambda\) ) of light source used is \(\frac{d^2}{3 D}\), then \(n^{\text {th }}\) dark fringe is observed on the screen, exactly in front of one of the slits. The value of ' \(n\) ' isMHT CET 2024 Medium
- If coil is open then \(L\) and \(R\) becomeMHT CET 2007 Hard
More PYQs from MHT CET
- If \(\bar{a}, \overline{\mathrm{~b}}, \overline{\mathrm{c}}\) are three unit vectors such that \(|\bar{a}+\overline{\mathrm{b}}|^2+|\bar{a}+\overline{\mathrm{c}}|^2=8\), then \(|\bar{a}+3 \overline{\mathrm{~b}}|^2+|\bar{a}+3 \overline{\mathrm{c}}|^2=\)MHT CET 2025 Medium
- Which from following coordinate complexes is a heteroleptic complex?MHT CET 2024 Medium
- 2,2 -dichloro propane on hydrolysis yieldsMHT CET 2007 Easy
- Which of the following is correct match?MHT CET 2014 Medium
- What is the range of particle size in colloidal state?MHT CET 2022 Medium
- What is the SI unit of conductivity?MHT CET 2022 Medium