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Elasticity — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsElasticity1 Mark
MCQ
In the above question, the ratio of the increase in energy of the wire to the decrease in gravitational potential energy when load moves downwards by $1 mm$, will be
  • A
    1
  • B
    $\frac{1}{4}$
  • C
    $\frac{1}{3}$
  • ✓
    $\frac{1}{2}$
✓

Answer

Correct option: D.
$\frac{1}{2}$
(d) Ratio of work done $=\frac{1 / 2 F l}{F l}=\frac{1}{2}$

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