NEET · Physics · STD 12 - 5. Magnetism and matter
An iron rod of susceptibility \(599\) is subjected to a magnetising field of \(1200\, Am ^{-1}\). The permeability of the material of the rod is \(\left(\mu_{0}=4 \pi \times 10^{-7}\, T\, m\, A ^{-1}\right)\)
- A \(2.4 \pi \times 10^{-7} \,T\, m\, A ^{-1}\)
- B \(2.4 \pi \times 10^{-4} \,T\, m \,A ^{-1}\)
- C \(8.0 \times 10^{-5}\, T\, m\, A ^{-1}\)
- D \(2.4 \pi \times 10^{-5} \,T\, m\, A ^{-1}\)
Answer & Solution
Correct Answer
(B) \(2.4 \pi \times 10^{-4} \,T\, m \,A ^{-1}\)
Step-by-step Solution
Detailed explanation
\(\mu_{ r }= x _{ m }+1=599+1=600\) \(\mu=\mu_{ o } \mu_{ r }=4 \pi \times 10^{-7} \times 600\)
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
- Unpolarised light is incident from air on a plane surface of a material of refractive index \(\mu .\) At a particular angle of incidence \(i,\) it is found that the reflected and refracted rays are perpendicular to each other. Which of the following options is correct for this situation?NEET 2018 Medium
- Two coherent sources of light interfere and produce fringe pattern on a screen. For central maximum, the phase difference between the two waves will be,NEET 2020 Easy
- The half-life of a radioactive substance is \(30\) minutes. The times (in minutes ) taken between \(40\%\) decay and \(85\%\) decay of the same radioactive substance isNEET 2016 Medium
- A particle moving in a circle of radius \(R\) with a uniform speed takes a time \(T\) to complete one revolution. If this particle were projected with the same speed at an angle ' \(\theta\) ' to the horizontal, the maximum height attained by it equals \(4 \mathrm{R}\). The angle of projection, \(\theta\), is then given byNEET 2021 Medium
- The area of a rectangular field (in \(m ^{2}\)) of length \(55.3\,m\) and breadth \(25 \;m\) after rounding off the value for correct significant digits isNEET 2022 Easy
- The angle of incidence for a ray of light at a refracting surface of a prism is \(45^o \). The angle of prism is \(60^o \) . If the ray suffers minimum deviation through the prism, the angle of minimum deviation and refractive index of the material of the prism respectively, areNEET 2016 Medium
More PYQs from NEET
- Let \(T_{1}\) and \(T_{2}\) be the energy of an electron in the first and second excited states of hydrogen atom, respectively. According to the Bohr's model of an atom, the ratio \(T _{1}: T _{2}\) isNEET 2022 Easy
- The essential chemical components of many coenzymes areNEET 2013 Medium
- During meiosis \(I\), the chromosomes start pairing atNEET 2013 Medium
- The angular momentum of electron in \('d'\) orbital is equal toNEET 2015 Hard
- Match the terms in column \(I\) with their description in column \(II\) and choose the correct option.
Column \(-I\) Column \(-II\) \((A)\) Dominance \((i)\) Many genesgovern a single character \((B)\) Codominance \((ii)\) In a heterozygousorganism only one allele expresses itself \((C)\) Pleiotropy \((iii)\) In a heterozygousorganism both alleles express themselves fully \((D)\) Polygenic \((iv)\) A single gene inheritanceinfluences many characters NEET 2016 Medium - Which of the following is not a stem modification?NEET 2016 Medium