JEE Main 2023 (Online) 8th April Evening Shift | Heat and Thermodynamics Question 112 | Physics

Work done by a Carnot engine operating between temperatures $$127^{\circ} \mathrm{C}$$ and $$27^{\circ} \mathrm{C}$$ is $$2 \mathrm{~kJ}$$. The amount of heat transferred to the engine by the reservoir is :

8 kJ

2 kJ

4 kJ

2.67 kJ

JEE Main 2023 (Online) 8th April Morning Shift

MCQ (Single Correct Answer)

-1

Given below are two statements:

Statement I: If heat is added to a system, its temperature must increase.

Statement II: If positive work is done by a system in a thermodynamic process, its volume must increase.

In the light of the above statements, choose the correct answer from the options given below

Both Statement I and Statement II are true

Statement I is false but Statement II is true

Statement I is true but Statement II is false

Both Statement I and Statement II are false

JEE Main 2023 (Online) 6th April Evening Shift

MCQ (Single Correct Answer)

-1

The temperature of an ideal gas is increased from $$200 \mathrm{~K}$$ to $$800 \mathrm{~K}$$. If r.m.s. speed of gas at $$200 \mathrm{~K}$$ is $$v_{0}$$. Then, r.m.s. speed of the gas at $$800 \mathrm{~K}$$ will be:

$$v_{0}$$

$$2 v_{0}$$

$$4 v_{0}$$

$$\frac{v_{0}}{4}$$

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