2nd Law of Thermodynamics

Q. A body cools from 70 degree celcius to 60 degree celcius in 5 minutes, then it will cool from 60 degree celcius to 50 degree in time (assume same surrounding whose temperature is 30 degree celcius.

Q.

Faradays laws are a consequence of the conservation of

1. Energy

2. Energy and magnetic field

3. Charge

4. Magnetic Field

Q. A body cools from 60 degree celsius to 50 degree celsius in 10 minutes. If the room temperature is 25 degree celsius and assuming Newtons cooling law holds good, the temperature of the body at the end of next 10 minutes is : (1) 45 degree celsius (2) 42.85 degree celsius (3) 40 degree celsius (4) 38.5 degree celsius

Q. Which of the following statements is correct according to the second law of thermodynamics?

1. All heat can be converted into work
2. All heat cannot be converted into work
3. Both (a) and (b) are correct.
4. Both (a) and (b) are wrong.

Q. 82. using the relation for the kinetic energy of a molecule of gas obtain law of equipartition of energy. obtain the value of the specific heat capacity ratio (Y=Cp/Cv) for diatomic gas applying this law.

Q. 52. The temperature of two bodies measued by a thermometer are t1=20 degreeC+-0.5degreeC and t2=50degreeC+-0.5degreeC.Calulate the temperature difference and error there in.

Q. Define temperature on the basis of zeroth law of thermodynamics.

Q.

The temperature range upto which Newton's law of cooling holds good

1. 30-40°C

2. 20-25°C

3. 25-30°C

4. 30-35°C

Q. Does intensive property depends on temperature?