JAIPUR NATIONAL UNIVERSITY, JAIPUR

School of Distance Education & Learning

Internal Assignment No. 1

B.SC BIOLOGY IIND YEAR

Paper Code: PH– 201

Paper Title: Thermal and Statical Physics

Last date of submission: Max. Marks: 15

Note: Question No. 1 is of short answer type and is compulsory for all the students.

(50-100 Words)

Q. 1. Answer all the questions:

a. What are the properties of absolute temperature?

b. Two states of energy gap 6.9x10-21J have relative

Probability of e2. Calculate the temperature of the complete system.

c. State second law of thermodynamics.

d. Explain the concept of triple point.

e. 1kg. Water (at 30oC) is mixed with 2kg. Water (at OoC) calculates the change in entropy.

NOTE: Answer any two questions. Each question carries 5 Marks. (1*5=5 Marks) (500 Words).

Attempt any four questions.

Q.1 Explain following terms:

a. Partition function ` b. Heat capacity

c. Enthalpy d. Helmholtz free energy

e. Gibbs free energy

Q.2 what is carnot engine? Derive the expression for efficiency calculation of carnot engine.

Q.3 State and derive clausius - clapeyson equation.

Q.4 what is the concept of liquid helium I and II? Explain the abnormal properties of liquid He..
JAIPUR NATIONAL UNIVERSITY, JAIPUR

School of Distance Education & Learning

Internal Assignment No. 2

B.SC BIOLOGY IIND YEAR

Paper Code: PH– 201

Paper Title: Thermal and Statical Physics

Last date of submission: Max. Marks: 15

Note: Question No. 1 is of short answer type and is compulsory for all the students.

(50-100 Words)

Q. 1. Answer all the questions.

f. What is regenerative cooling?

g. Prove that

h. Explain thermal conduction.

i. Derive the relation between entropy and probability.

j. Explain thermionic emission.

Note: Answer any two questions. Each question carries 5 marks (Word limits 500)

Q.5 using energy distribution function. Prove that the mean kinetic energy of a system is always

Proportional to temperature.

Q.6 For an ideal gas. Prove wPV = nRT using velocity distribution statistics.

Q.7 what are postulates of quantum physics? State plank distribution law.