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JEE Main 20207 JanuaryEvening Shift

Exam: JEE Main
Year: 2020
Date: 7 January
Shift: Evening Shift
Subject: Physics
Chapter: Magnetic Properties of Matter

JEE Main 2020 · 7 January · Evening Shift · Physics · Magnetic Properties of Matter

The figure gives experimentally measured B vs. H variation in a...

The figure gives experimentally measured B vs. H variation in a ferromagnetic material. The retentivity, coercivity and

The figure gives experimentally measured

B

vs.

H

variation in a ferromagnetic material. The retentivity, coercivity and saturation, respectively, of the material are:

Options

A $1.5\text{T}, 50A / m$ and $1.0\text{T}$
B $1.5\text{T}, 50A / m$ and $1.0\text{T}$
C $150A / m, 1.0T$ and $1.5\text{T}$
D $1.0\text{T}, 50A / m$ and $1.5\text{T}$

Correct answer

D. $1.0\text{T}, 50A / m$ and $1.5\text{T}$

Step-by-step solution

The figure gives experimentally measured B vs. H variation in a ferromagnetic material. The retentivity, coercivity and

x = retentivity

y = coercivity

z = saturationmagnetization

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