IFS (Forest Services) Physics: Questions 1 - 5 of 544

Choose Programs:

📹 Video Course 2024 (300 Lectures [199 hrs : 9 mins]): Offline Support

Rs. 1230.00 -OR-

1 Month Validity (Multiple Devices)

Preview All LecturesDetails

🎓 Study Material (232 Notes): 2024-2025 Syllabus

Rs. 350.00 -OR-

3 Year Validity (Multiple Devices)

Topic-wise Notes & SampleDetails

🎯 544 Questions (& PYQs) with Full Explanations (2024-2025 Exam)

Rs. 1000.00 -OR-

3 Year Validity (Multiple Devices)

CoverageDetailsSample Explanation

Help me Choose & Register (Watch Video) Already Subscribed?

Question 1

Appeared in Year: 2011

Write in Short Short Answer▾

Write down the expression for the Bose – Einstein distribution function and explain the meaning of the symbols used. (Paper-I) (Section - B)

Edit

Question 2

Appeared in Year: 2011

Write in Short Short Answer▾

A particle of rest mass ‘M’ moving at a velocity ‘u’ collides with a stationary particle of rest mass ‘m’ . If the particle stick together, show that the speed of the composite ball is equal to,

Where (Paper-1) (Section – A)

Edit

Question 3

Appeared in Year: 2011

Describe in Detail Subjective▾

Obtain the term symbols for two singlet states and two triplet states for two electron atoms. (Paper-2) (Section-A)

Edit

Explanation

If we knowing the value of various types of angular momenta, term symbols gives three kinds of information,

Total orbital angular momentum, L

Multiplicity of the terms,

Total angular momentum,

Vectors Sum of Angular Momentum
  • We can do vecto…

… (344 more equations, 22 figures) …

Question 4

Appeared in Year: 2012

Describe in Detail Subjective▾

Using D՚Alembert՚s principle, show that the following relation can be obtained for a system of particles under generalized coordinates,

What is the significance of ? (Paper-1) (section – A)

Edit

Explanation

  • The mathematical statement of D՚Alembert՚s principle is given as,

  • Transform D՚Alembert՚s principle into expressions containing inde…

… (107 more equations) …

Question 5

Appeared in Year: 2012

Write in Short Short Answer▾

Express Lagrange՚s equation of motion for the cyclic coordinate and show that the result leads to the general conservation theorem for the generalized momentum coordinates. (Paper - 1) (Section – A)

Edit