## What will be the trace of 3-by-3 unit matrix?

A. 1
B. 2
C. 3
D. Does not exist

C. 3

## Matrix A is said to be orthogonal if

A. Transpose of A= -A
B. Multiplicative inverse of A = -A
C. Transpose of A= Multiplicative inverse of A
D. None of these

C. Transpose of A= Multiplicative inverse of A

A. Pf(r)=f(-r)
B. Pf(r)=f(r)
C. Pf(r)=-f(r)
D. None of these

A. Pf(r)=f(-r)

## Infinite square well and harmonic oscillator are examples of

A. Unbound state
B. Continuous spectrum
C. Both
D. None of these

D. None of these

## x- is called

A. Deviation
B. Variance
C. Standard deviation
D. None of these

A. Deviation

## Which of the following is not true about total probability?

A. Lies b/w 0 and 1
B. Time independent
C. Time dependent
D. None of these

C. Time dependent

A. f+g
B. f-g
C. fg
D. None of these

C. fg

## Schrodinger equation is a partial differential equation of

A. 1st order
B. 2nd order
C. 2nd degree
D. Both (B) and (C)

B. 2nd order

A. Zero
B. One
C. Infinite
D. None of these