# Mathematical Methods of Physics-Binomial, Poisson and Normal Distributions (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 1 - 4 of 6

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## Question number: 1

» Mathematical Methods of Physics » Binomial, Poisson and Normal Distributions

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Appeared in Year: 2014

MCQ▾

### Question

Given,

For the value of is – (June)

### Choices

Choice (4)Response

a.

1

b.

-1

c.

0.5

d.

0.26

## Question number: 2

» Mathematical Methods of Physics » Binomial, Poisson and Normal Distributions

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Appeared in Year: 2012

MCQ▾

### Question

The radioactive decay of a certain material satisfied Poisson statistics with a mean rate of per second, what should be the minimum duration of counting (in seconds) so that relative error is less than 1%? (June)

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 3

» Mathematical Methods of Physics » Binomial, Poisson and Normal Distributions

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Appeared in Year: 2014

MCQ▾

### Question

Two independent random variables m and n, which can take the integer values , follow the Poisson distribution, with distinct mean values and respectively. Then, (December)

### Choices

Choice (4)Response

a.

The probability distribution of the random variable is also a Poisson distribution.

b.

The variance of the random variable is equal to .

c.

The mean value of the random variable is equal to 0.

d.

The probability distribution of the random variable is a binomial distribution.

## Question number: 4

» Mathematical Methods of Physics » Binomial, Poisson and Normal Distributions

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Appeared in Year: 2014

MCQ▾

### Question

If the electrostatic potential in spherical polar coordinates is ; where and are constants, then the charge density at a distance will be – (June)

### Choices

Choice (4)Response

a.

b.

c.

d.

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