CSIR Physical Sciences: Questions 28 - 29 of 389

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 389 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 250.00 or

Question number: 28

» Thermodynamic and Statistical Physics » Laws of Thermodynamics

Appeared in Year: 2013

MCQ▾

Question

Ten grams of ice at 00 C is added to a beaker containing 30 grams of water at 250 C. What is the final temperature of the system when it comes to thermal equilibrium?

(The specific heat of water is 1calgm11 and latent heat of melting of ice is 80calgm1 ) (June)

Choices

Choice (4) Response
a.

1.25

b.

7.5

c.

0

d.

12.5

Question number: 29

» Thermodynamic and Statistical Physics » Classical and Quantum Statistics

Appeared in Year: 2013

MCQ▾

Question

For temperature T1 > T2, the qualitative temperature dependence of the probability distribution F(v) of the speed v of molecule in three dimensions is correctly represented by the following figure: (June)

Choices

Choice (4) Response
a.
Probability distribution of speed vs speed: Choice A

Probability Distribution of Speed vs Speed: Choice A

In figure the qualitative temperature dependence of the probability distribution of speed of molecule in three dimensions is represented.

b.
Probability distribution of speed vs speed: Choice B

Probability Distribution of Speed vs Speed: Choice B

In figure the qualitative temperature dependence of the probability distribution of speed of molecule in three dimensions is represented.

c.
Probability distribution of speed vs speed: Choice C

Probability Distribution of Speed vs Speed: Choice C

In figure the qualitative temperature dependence of the probability distribution of speed of molecule in three dimensions is represented.

d.
Probability distribution of speed vs speed: Choice D

Probability Distribution of Speed vs Speed: Choice D

In figure the qualitative temperature dependence of the probability distribution of speed of molecule in three dimensions is represented.

Sign In