# GATE (Graduate Aptitude Test in Engineering) Physics: Questions 91 - 95 of 659

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## Question number: 91

Appeared in Year: 2014

### Write in Short

and are two orthogonal states of a spin system. It is given that

Where and represent the spin – up and spin – down states, respectively. When the system is in the state , its probability to be in the spin – up state is .

## Question number: 92

Appeared in Year: 2015

### Write in Short

The excitation wavelength of laser in a Raman Effect experiment is 546 nm. If the stokes’ line is observed at 552 nm, then the wavelength of the anti – stokes’ line (in per cm) is ________.

## Question number: 93

Appeared in Year: 2015

### Write in Short

A point charge is placed between two semi – infinite conducting plates which are inclined at an angle of with respect to each other. The number of image charge is ________.

## Question number: 94

Appeared in Year: 2014

MCQ▾

### Question

An unpolarized light wave is incident from air on a glass surface at the Brewster angle. The angle between the reflected and the refracted wave is –

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 95

» Mathematical Physics » Elements of Complex Analysis » Cauchy-Riemann Conditions

Appeared in Year: 2014

MCQ▾

### Question

The length element of an arc is given by, . The metric tensor is –

### Choices

Choice (4) Response

a.

b.

c.

d.

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