JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

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Application +4 | -1

The density of mercury is

13.6 \mathrm{~g} \mathrm{~cm}^{-3}

0^{\circ} \mathrm{C}

and its coefficient of cubical expansion is

1.82 \times 10^{-4}{ }^{\circ} \mathrm{C}^{-1}

. Calculate the density of mercury at

50^{\circ} \mathrm{C}

View answer and explanation

Correct option: A

13.48 \mathrm{~g} \mathrm{~cm}^{-3}

Option B (

a / \sqrt{2}

) is correct because at this displacement, the potential energy equals the kinetic energy, which is half of the total energy.

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