GATE Physics: Questions 220 - 222 of 622

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Question number: 220

» Thermodynamics and Statistical Physics » First and Second Order Phase Transitions

Appeared in Year: 2013

MCQ▾

Question

Across a first order phase transition, the free energy is –

Choices

Choice (4) Response

a.

Proportional to the temperature

b.

Such that the first derivative with respect to temperature is continuous

c.

A continuous function of the temperature but its derivative is discontinuous

d.

A discontinuous function of the temperature

Question number: 221

» Electromagnetic Theory » Solutions of Electrostatic and Magnetostatic Problems

Appeared in Year: 2011

MCQ▾

Question

A uniform surface current is flowing in the positive Equation direction over an infinite sheet lying in Equation plane. The direction of the magnetic field is –

Choices

Choice (4) Response

a.

Along Equation for Equation and along Equation for Equation

b.

Along Equation for Equation and along Equation for Equation

c.

Along Equation for Equation and along Equation for Equation

d.

Along Equation for Equation and along Equation for Equation

Question number: 222

» Electromagnetic Theory » Interference

Appeared in Year: 2013

MCQ▾

Question

Interference fringes are seen at an observation plane Equation , by the superposition of two plane waves Equation and Equation , where Equation and Equation are real amplitudes. The condition for interference maximum is –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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