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JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

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Two litre glass flask contains some mercury. It is found that at all temperatures the volumes of the air inside the flask remains the same. The volume of the mercury inside the flask is
(α  for  glass = 9×10−6/∘C,  γ  for  mercury = 1.8×10−4/∘C)\left( {\alpha \,\,\mathrm{for}\,\,\mathrm{glass}\, = \,9 \times {{10}^{ - 6}}/^\circ C,\,\,\gamma \,\,\mathrm{for}\,\,\mathrm{mercury}\, = \,1.8 \times {{10}^{ - 4}}/^\circ C} \right)
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Correct option: D
300 CC
Option D (300 CC) is correct because it is the volume of mercury that keeps the air volume constant, calculated using the coefficients of volume expansion.

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