JEE Main 2017 (Offline) | Heat and Thermodynamics Question 334 | Physics

C_P and C_v are specific heats at constant pressure and constant volume respectively. It is observed that
C_P – C_v = a for hydrogen gas
C_P – C_v = b for nitrogen gas
The correct relation between a and b is

a = 28 b

a = 1/14 b

a = b

a = 14 b

JEE Main 2016 (Online) 10th April Morning Slot

MCQ (Single Correct Answer)

-1

Out of Syllabus

A Carnot freezer takes heat from water at 0^oC inside it and rejects it to the room at a temperature of 27^oC. The latent heat of ice is 336×10³ J kg⁻¹. If 5 kg of water at 0^oC is converted into ice at 0^oC by the freezer, then the energy consumed by the freezer is close to :

1.67 $$ \times $$ 10⁵ J

1.68 $$ \times $$ 10⁶ J

1.51 $$ \times $$ 10⁵ J

1.71 $$ \times $$ 10⁷ J

JEE Main 2016 (Online) 10th April Morning Slot

MCQ (Single Correct Answer)

-1

Which of the following shows the correct relationship between the pressure ‘P’ and density $$\rho $$ of an ideal gas at constant temperature ?

JEE Main 2016 (Online) 10th April Morning Slot Physics - Heat and Thermodynamics Question 317 English Option 1

JEE Main 2016 (Online) 10th April Morning Slot Physics - Heat and Thermodynamics Question 317 English Option 2

JEE Main 2016 (Online) 10th April Morning Slot Physics - Heat and Thermodynamics Question 317 English Option 3

JEE Main 2016 (Online) 10th April Morning Slot Physics - Heat and Thermodynamics Question 317 English Option 4

JEE Main 2016 (Online) 9th April Morning Slot

MCQ (Single Correct Answer)

-1

200 g water is heated from 40^oC to 60^oC. Ignoring the slight expansion of water, the change in its internal energy is close to (Given specific heat of water = 4184 J/kg/K) :

8.4 kJ

4.2 kJ

16.7 kJ

167.4 kJ

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