Thermodynamic and Statistical Physics [CSIR (Council of Scientific & Industrial Research) Physical Sciences]: Questions 33 - 36 of 89
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Question 33
Appeared in Year: 2013
Question MCQ▾
Consider the following ratio of the partial decay widest,
If the effects pf electromagnetic and weak interaction are neglected, then and are respectively is given as, (Dec -2013)
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |
Question 34
Appeared in Year: 2013
Question MCQ▾
Consider a system of two Ising spins and taking values with interaction energy given by , when it is in thermal equilibrium at temperature T. For large T, the average energy of the system varies as , with C given by,
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |
Question 35
Appeared in Year: 2014
Question MCQ▾
The recently discovered Higgs boson at the LHC experiment has a decay mode into a photon and a Z boson. If the rest masses of the Higgs and Z boson are and respectively, and the decaying Higgs particle is at rest, the energy of photon will approximately be – (June – 2014)
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |
Question 36
Appeared in Year: 2013
Question MCQ▾
Let be a random variable uniformly distributed in the interval and , where is a real constant. If V is to be exponentially distributed in the interval with unit standard deviation, then the value of should be – (June)
Choices
Choice (4) | Response | |
---|---|---|
a. | -1 | |
b. | 1 | |
c. | ||
d. |