A massless spring gets elongated by amount x₁ under a tension of… | JEE Main 2025 Physics PYQ

MCQEasyJEE Main 2025 · 23 January, Shift 2Elasticity & Stress-Strain Curve

A massless spring gets elongated by amount $x_1$ under a tension of $5 \, \text{N}$ . Its elongation is $x_2$ under the tension of $7 \, \text{N}$ . For the elongation of $5x_1 - 2x_2$ , the tension in the spring will be:

A
$15 \, \text{N}$
B
$20 \, \text{N}$
C
$11 \, \text{N}$
D
$39 \, \text{N}$

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