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