JEE Main 2021 (Online) 31st August Morning Shift | Heat and Thermodynamics Question 164 | Physics

For an ideal gas the instantaneous change in pressure 'p' with volume 'v' is given by the equation $${{dp} \over {dv}} = - ap$$. If p = p₀ at v =0 is the given boundary condition, then the maximum temperature one mole of gas can attain is : (Here R is the gas constant)

$${{{p_0}} \over {aeR}}$$

$${{a{p_0}} \over {eR}}$$

infinity

0$$^\circ$$C

JEE Main 2021 (Online) 27th August Evening Shift

MCQ (Single Correct Answer)

-1

if the rms speed of oxygen molecules at 0$$^\circ$$C is 160 m/s, find the rms speed of hydrogen molecules at 0$$^\circ$$C.

640 m/s

40 m/s

80 m/s

332 m/s

JEE Main 2021 (Online) 27th August Evening Shift

MCQ (Single Correct Answer)

-1

The height of victoria falls is 63 m. What is the difference in temperature of water at the top and at the bottom of fall?

[Given 1 cal = 4.2 J and specific heat of water = 1 cal g^$$-$$1 $$^\circ$$0C^$$-$$1]

0.147$$^\circ$$ C

14.76$$^\circ$$ C

1.476$$^\circ$$ C

0.014$$^\circ$$ C

JEE Main 2021 (Online) 27th August Morning Shift

MCQ (Single Correct Answer)

-1

A balloon carries a total load of 185 kg at normal pressure and temperature of 27$$^\circ$$C. What load will the balloon carry on rising to a height at which the barometric pressure is 45 cm of Hg and the temperature is $$-$$7$$^\circ$$C. Assuming the volume constant?

181.46 kg

214.15 kg

219.07 kg

123.54 kg

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