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10.1, thermonetry,thermal expansion and calorimetry — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysics10.1, thermonetry,thermal expansion and calorimetry1 Mark
MCQ
A solid cube is first floating in a liquid. The coefficient of linear expansion of cube is $\alpha$ and the coefficient of volume expansion of liquid is $\gamma$. On increasing the temperature of (liquid + cube) system, the cube will sink if
  • A
    $\gamma=3 \alpha$
  • ✓
    $\gamma > 3 \alpha$
  • C
    $\gamma < 3 \alpha$
  • D
    $\gamma=2 \alpha$
✓

Answer

Correct option: B.
$\gamma > 3 \alpha$
b
(b)

Cube will sink if expansion in liquid upon heating is more than that of cube or $3 \alpha < \gamma$

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