AP EAPCET 2025 - 26th May Evening Shift | Heat and Thermodynamics Question 15 | Physics

If the rms speed of the molecules of a diatomic gas at a temperature of 322 K is $2000 \mathrm{~ms}^{-1}$, then the gas is (Universal gas constant $=8.31 \mathrm{Jmol}^{-1} \mathrm{~K}^{-1}$ )

hydrogen

nitrogen

oxygen

chlorine

AP EAPCET 2025 - 24th May Morning Shift

MCQ (Single Correct Answer)

-0

The temperature of water of mass 100 g is rasied from $24^{\circ} \mathrm{C}$ to $90^{\circ} \mathrm{C}$ by adding steam to it. The mass of the steam added is (Latent heat of steam $=540 \mathrm{cal} \mathrm{g}^{-1}$ and specific heat capacity of water $=1 \mathrm{cal} \mathrm{g}^{-1}{ }^{\circ} \mathrm{C}^{-1}$ )

10 g

12 g

8 g

16 g

AP EAPCET 2025 - 24th May Morning Shift

MCQ (Single Correct Answer)

-0

When 80 J of heat is supplied to a gas at constant pressure, if the work done by the gas is 20 J , then the ratio of the specific heat capacities of the gas is

$\frac{4}{3}$

$\frac{5}{3}$

$\frac{7}{5}$

$\frac{9}{7}$

AP EAPCET 2025 - 24th May Morning Shift

MCQ (Single Correct Answer)

-0

A refrigerator of coefficient of performance 5 that extracts heat from the cooling compartment at the rate of 250 J per cycle is placed in a room. The heat released per cycle to the room by the refrigerator is

250 J

50 J

200 J

300 J

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