Physics Magnetism and Matter JEE Main 2019 - ( Magnetic Properties of Matter ) MCQ (Single Correct)

A load of mass M kg is suspended from a steel wire of length 2 m and radius 1.0 mm in Searle's apparatus experiment. The increase in length produced in the wire is 4.0 mm. Now the loads is fully immersed in a liquid of relative density 2. The relative density of the material of load is 8.

The new value of increase in length of the steel wire is :

A
3.0 mm
B
4.0 mm
C
5.0 mm
D
Zero

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Text Solution

Verified by Experts
The correct answer is:
A

JEE Main 2019

Using

… (i)

T = Mg

From equation (i)

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