# A paramagnetic sample shows a net magnetism of 6 A/m when it is placed in an external magnetic field of 0.4T at a temperature of 4K. When the sample is placed in a external magnetic field of 0.3T at a temperature of 24K, then the magnetism will be: Option: 1 1 A/m Option: 2 4 A/m Option: 3 2.25 A/m Option: 4 0.75 A/m

$\\ \text{For paramagnetic material According to curies law} \\ \chi \propto \frac{1}{\mathrm{~T}}\\ \chi \propto \frac{1}{\mathrm{~T}} \\\Rightarrow \chi_{1} \mathrm{~T}_{1}=\chi_{2} \mathrm{~T}_{2}\\ \Rightarrow \frac{6}{0.4} \times 4=\frac{\mathrm{I}}{0.3} \times 24 \\ I=\frac{0.3}{0.4}=0.75 \mathrm{~A} / \mathrm{m}$

## Most Viewed Questions

### Preparation Products

##### Knockout JEE Main April 2021 (One Month)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 14000/- ₹ 4999/-
##### Knockout JEE Main May 2021

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 22999/- ₹ 9999/-
##### Test Series JEE Main May 2021

Unlimited Chapter Wise Tests, Unlimited Subject Wise Tests, Unlimited Full Mock Tests, Get Personalized Performance Analysis Report,.

₹ 6999/- ₹ 2999/-
##### Knockout JEE Main May 2022

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 34999/- ₹ 14999/-
##### JEE Main Rank Booster 2021

Booster and Kadha Video Lectures, Unlimited Full Mock Test, Adaptive Time Table, 24x7 Doubt Chat Support,.

₹ 13999/- ₹ 6999/-
Boost your Preparation for JEE Main 2021 with Personlized Coaching

Exams
Articles
Questions