Quantum Mechanics MCQs deal with When Photon Moves Back After Collision, Then Compton Shift Is, Classical Physics Failed To Explain The Phenomenon Of, E=HѴ Is Called, The Time B/W The Incidence Of Light And Emission Of Electrons Is Less Than, Compton Shift Is Maximum At, “Particles Also Have Dual Nature”. The Idea Was Given By, The Maximum Probability Of Finding The Particle Anywhere Is Equal To, Schrodinger Equation Is A Partial Differential Equation Of, Which Of The Following Is Not True About Total Probability, X- Is Called, Infinite Square Well And Harmonic Oscillator Are Examples Of, P Is Said To Be Parity Operator If, What Will Be The Trace Of 3-By-3 Unit Matrix, Wave Function Must Be, Practically We Use Wave Nature Of Particles In:

# Quantum Mechanics MCQs

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

A. 1

B. 2

C. 3

D. Does not exist

**View Answer**

**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

**View Answer**

**C. Transpose of A= Multiplicative inverse of A**

## P is said to be parity operator if

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

B. Pf(r)=f(r)

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

D. None of these

**View Answer**

**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

**View Answer**

**D. None of these**

## x- is called

A. Deviation

B. Variance

C. Standard deviation

D. None of these

**View Answer**

**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

**View Answer**

**C. Time dependent**

## If f and g are solutions of time dependent Schrödinger equation , then which of the following is not a solution ;

A. f+g

B. f-g

C. fg

D. None of these

**View Answer**

**C. fg**

## Schrodinger equation is a partial differential equation of

A. 1st order

B. 2nd order

C. 2nd degree

D. Both (B) and (C)

**View Answer**

**B. 2nd order**

## The maximum probability of finding the particle anywhere is equal to

A. Zero

B. One

C. Infinite

D. None of these

**View Answer**

**B. One**