1

JEE Main 2021 (Online) 1st September Evening Shift

Numerical

+4

-1

The temperature of 3.00 mol of an ideal diatomic gas is increased by 40.0$$^\circ$$C without changing the pressure of the gas. The molecules in the gas rotate but do not oscillate. If the ratio of change in internal energy of the gas to the amount of workdone by the gas is $${x \over {10}}$$. Then the value of x (round off to the nearest integer) is ___________. (Given R = 8.31 J mol

^{$$-$$1}K^{$$-$$1})Your input ____

2

JEE Main 2021 (Online) 1st September Evening Shift

Numerical

+4

-1

The average translational kinetic energy of N

_{2}gas molecules at .............$$^\circ$$C becomes equal to the K.E. of an electron accelerated from rest through a potential difference of 0.1 volt. (Given k_{B}= 1.38 $$\times$$ 10^{$$-$$23}J/K) (Fill the nearest integer).Your input ____

3

JEE Main 2021 (Online) 31st August Evening Shift

Numerical

+4

-1

A sample of gas with $$\gamma$$ = 1.5 is taken through an adiabatic process in which the volume is compressed from 1200 cm

^{3}to 300 cm^{3}. If the initial pressure is 200 kPa. The absolute value of the workdone by the gas in the process = _____________ J.Your input ____

4

JEE Main 2021 (Online) 27th August Evening Shift

Numerical

+4

-1

Out of Syllabus

A heat engine operates between a cold reservoir at temperature T

_{2}= 400 K and a hot reservoir at temperature T_{1}. It takes 300 J of heat from the hot reservoir and delivers 240 J of heat to the cold reservoir in a cycle. The minimum temperature of the hot reservoir has to be ______________ K.Your input ____

Questions Asked from Heat and Thermodynamics (Numerical)

Number in Brackets after Paper Indicates No. of Questions

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