CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 25 - 28 of 463

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Question number: 25

» Quantum Mechanics » Spin-Statistics Connection

Appeared in Year: 2013

MCQ▾

Question

In a basis in which the z – component of the spin is diagonal, an electron is in a spin state,

The probability that a measurement of will yield the value and are, respectively,

Choices

Choice (4) Response

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b.

c.

d.

Question number: 26

» Classical Mechanics » Periodic Motion » Normal Modes

Appeared in Year: 2013

MCQ▾

Question

The acceleration due to gravity g is determined by measuring the time period T and the length L of a simple pendulum. If the uncertainties in the measurements of T and L are and respectively, the fractional error in measuring is best approximated by, (June)

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Choice (4) Response

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b.

c.

d.

Question number: 27

» Electromagnetic Theory » Gauge Invariance

Appeared in Year: 2013

MCQ▾

Question

The components of a vector potential are given by,

Where k is a constant. The three component of the electric field are – (June)

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Choice (4) Response

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b.

c.

d.

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 and latent heat of melting of ice is ) (June)

Choices

Choice (4) Response

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b.

c.

d.

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