JEE Main 2022 · 30 Jun · Shift 1 · Physics Q38

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PhysicsSingle correct+4 / -1Question 38 of 90

The pressure of the gas in a constant volume gas thermometer is 100 cm of mercury when placed in melting ice at 1 atm. When the bulb is placed in a liquid, the pressure becomes 180 cm of mercury. Temperature of the liquid is :

(Given 0°C = 273 K)

300 K

400 K

600 K

491 K

Answer and worked solution

Official answer: D

Constant volume. $T=273\times\frac{180}{100}\approx491$ K.

(D)

Topics:Temperature and thermal expansion Ideal gas equation

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JEE Main 2022 · 30 Jun · Shift 1, Physics question 38