# 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

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## Question 245

Appeared in Year: *2013*

### Question

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

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## 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

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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,

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## 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 –

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