# Mathematical Methods of Physics (CSIR Physical Sciences): Questions 17 - 21 of 67

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## Question number: 17

» Mathematical Methods of Physics » Vector Algebra and Vector Calculus

Appeared in Year: 2012

MCQ▾

### Question

A vector perpendicular to any vector that lies on the plane defined by , is (June)

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 18

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

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: 19

» Mathematical Methods of Physics » Elements of Complex Analysis

Appeared in Year: 2012

MCQ▾

### Question

Let be the real part of an analytic function of the complex variable, the imaginary part of is – (June)

### Choices

Choice (4) Response

a.

b.

c.

y

d.

## Question number: 20

» Mathematical Methods of Physics » Eigenvalues and Eigenvectors

Appeared in Year: 2012

MCQ▾

### Question

The eigenvalue of the matrix are, (June)

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 21

» Mathematical Methods of Physics » Elementary Probability Theory

Appeared in Year: 2012

MCQ▾

### Question

A ball is picked at random from one of two boxes that contain 2 black, 3 white and 4 white, 3 black balls respectively. What is the probability that it is white? (June)

### Choices

Choice (4) Response

a.

b.

c.

d.

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