JEE Main 2026 (4 Apr, Shift 1) Physics Q34: Elasticity

Question

A string $A$ of length $0.314$ m and Young's modulus $2	imes10^{10}\ \mathrm{N/m^2}$ is connected to another string $B$ of length and Young's modulus both twice of those of $A$. This series combination of strings is then suspended from a rigid support and its free end is fixed to a load of mass $0.8$ kg. The net change in length of the combination is ______ mm.
(radius of both the strings is $0.2$ mm and acceleration due to gravity $=10\ \mathrm{m/s^2}$)
(Mass of both strings is to be neglected as compared to the mass of load)

Accepted Answer

Option 2: $2$

Answer

$3$

Answer

$2$

Answer

$1.9$

Answer

$1$

JEE Main 4 April 2026, Shift 1, Physics Q34

Same idea in other shifts