MHT CET · Physics · Magnetic Properties of Matter
An iron rod is placed parallel to magnetic field of intensity \(2000 \frac{\mathrm{A}}{\mathrm{m}}\). The magnetic flux through the rod is \(6 \times 10^{-4} \mathrm{~Wb}\) and its cross-sectional area is \(3 \mathrm{~cm}^{2}\). The magnetic permeability of the rod in \(\frac{\mathrm{Wb}}{\mathrm{A}-\mathrm{m}}\) is
- A \(10^{-1}\)
- B \(10^{-4}\)
- C \(10^{-3}\)
- D \(10^{-2}\)
Answer & Solution
Correct Answer
(C) \(10^{-3}\)
Step-by-step Solution
Detailed explanation
\(\mu=\frac{B}{H}=\frac{\phi}{A H}=\frac{6 \times 10^{-4}}{3 \times 10^{-4}} \times \frac{1}{2 \times 10^{3}}=10^{-3}\)
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
- If the distance between two current carrying parallel wire is made \(\left(\frac{1}{3}\right)^{r d}\) then the magnitude of the force between them (the same current is passing through both wires)MHT CET 2022 Easy
- In a radioactive material the activity at time \(t_{1}\) is \(R_{1}\) and at a later time \(t_{2}\), it is \(R_{2}\). If the decay constant of the material is \(\lambda\), thenMHT CET 2007 Medium
- In LCR resonant circuit, the current and voltage have phase differenceMHT CET 2024 Easy
- Lorenz magnetic force is acting on a particle of charge \(q\) moving with velocity \(\vec{V}\) in a magnetic field \(\vec{B}\). The work done by this force on the charged particle isMHT CET 2025 Easy
- For a monoatomic gas, the work done at constant pressure is ' \(\mathrm{W}\) '. The heat supplied at constant volume for the same rise in temperature of the gas isMHT CET 2021 Easy
- With the gradual increase in frequency of an a. c. source, the impedance of an LCR series circuitMHT CET 2023 Easy
More PYQs from MHT CET
- For a transistor, \(\frac{1}{\alpha_{D C}}-\frac{1}{\beta_{D C}}\) is equal to \(\left[\alpha_{D C}\right.\) and \(\beta_{D C}\) are current amplification factors]MHT CET 2021 Hard
- The IUPAC name of
MHT CET 2008 Easy - Light waves from two coherent sources arrive at two points on a screen with path difference of zero and \(\lambda / 2\). The ratio of the intensities at the points isMHT CET 2020 Medium
- The magnetic moments associated with two closely wound circular coils A and B of radius \(r_A=10 \mathrm{~cm}\) and \(r_B=20 \mathrm{~cm}\) respectively are equal if \(\left(\mathrm{N}_A, \mathrm{I}_A\right.\) and \(\mathrm{N}_{\mathrm{B}}, \mathrm{I}_{\mathrm{B}}\) are number of turns and current of A and B respectively)MHT CET 2024 Easy
- Which among the following compounds is treated with benzonitrile of obtain benzophenon in dry ether and then acid hydrolysis?MHT CET 2020 Medium
- If the vectors \(m \hat{i}+m \hat{j}+n \hat{k}, \hat{i}+\hat{k}, n \hat{i}+n \hat{j}+p \hat{k}\) lie in a plane then...MHT CET 2025 Medium