GATE (Graduate Aptitude Test in Engineering) Physics: Questions 244 - 248 of 659

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Question 244

Appeared in Year: 2011

Question

MCQ▾

The normalized ground state wavefunction of a hydrogen atom is given by,

Where is the Bohr radius and is the distance of the electron from the nucleus, located at the origin. The expectation value is

Choices

Choice (4)Response

a.

b.

c.

d.

Question 245

Appeared in Year: 2013

Question

MCQ▾

The relativistic form of Newton՚s second law of motion is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 246

Appeared in Year: 2011

Question

MCQ▾

The temperature dependence of magnetic susceptibility of a ferromagnetic substance with a Curie temperature is given by

Choices

Choice (4)Response

a.

b.

c.

d.

for all temperature where C is constant.

Question 247

Appeared in Year: 2011

Question

MCQ▾

The quantum mechanical operator for the moment of a particle moving in one dimension is given by,

Choices

Choice (4)Response

a.

b.

c.

d.

Question 248

Appeared in Year: 2013

Question

MCQ▾

The total energy of an ionic solid is given by an expression where is Madelung constant, is the distance between the nearest neighbors in the crystal and is a constant. If is the equilibrium separation between the nearest neighbors then the value of is –

Choices

Choice (4)Response

a.

b.

c.

d.

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