1
JEE Main 2022 (Online) 30th June Morning Shift
+4
-1

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$$^\circ$$C = 273 K)

A
300 K
B
400 K
C
600 K
D
491 K
2
JEE Main 2022 (Online) 30th June Morning Shift
+4
-1

A sample of monoatomic gas is taken at initial pressure of 75 kPa. The volume of the gas is then compressed from 1200 cm3 to 150 cm3 adiabatically. In this process, the value of workdone on the gas will be :

A
79 J
B
405 J
C
4050 J
D
9590 J
3
JEE Main 2022 (Online) 29th June Evening Shift
+4
-1

At what temperature a gold ring of diameter 6.230 cm be heated so that it can be fitted on a wooden bangle of diameter 6.241 cm ? Both the diameters have been measured at room temperature (27$$^\circ$$C).

(Given : coefficient of linear thermal expansion of gold $$\alpha$$L = 1.4 $$\times$$ 10$$-$$5 K$$-$$1)

A
125.7$$^\circ$$C
B
91.7$$^\circ$$C
C
425.7$$^\circ$$C
D
152.7$$^\circ$$C
4
JEE Main 2022 (Online) 29th June Evening Shift
+4
-1

Starting with the same initial conditions, an ideal gas expands from volume V1 to V2 in three different ways. The work done by the gas is W1 if the process is purely isothermal, W2, if the process is purely adiabatic and W3 if the process is purely isobaric. Then, choose the correct option

A
W1 < W2 < W3
B
W2 < W3 < W1
C
W3 < W1 < W2
D
W2 < W1 < W3
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