NEET UG PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

1 Easy

1 of 1

Application +4 | -1

Air is filled at

60^{\circ} \mathrm{C}

in a vessel of open mouth. The vessel is heated to a temperature

T

so that

1 / 4^{\text {th}}

part of air escapes. Assuming the volume of the vessel remaining constant, the value of

T

View answer and explanation

Correct option: D

171^{\circ} \mathrm{C}

Option D (

171^{\circ} \mathrm{C}

) is correct because it is calculated using Charles's Law, considering the amount of air that escapes the vessel.

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60 \mathrm{~cm} \times 50 \mathrm{~cm} \times 20 \mathrm{~cm}

1 \mathrm{~cm}

0^{\circ} \mathrm{C}

40^{\circ} \mathrm{C}

3.4 \times 10^5 \mathrm{~J} \mathrm{~kg}^{-1}

\left. {0.05{\text{W}}{{\text{m}}^{ - 1}}^\circ {{\text{C}}^{ - 1}}} \right)

2 \times 10^5 \mathrm{~J} / \mathrm{sm}^2

127^{\circ} \mathrm{C}

32 \times 10^5 \mathrm{~J} / \mathrm{s}-\mathrm{m}^2

\sigma

+ \frac{1}{2}