# Quantum Physics Quiz for fun and Quiz Competition Practice 4

Quantum Physics Quiz is here,

## Results

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### #1. For electron scattering experiment, the de- Broglie wavelength of electrons used must be of the order of ___.

### #2. If Ψ(r) = constant, then Schrödinger’s equation becomes __ .

### #3. Which of the following has unit MeV ?

### #4. Which of the following expressions refer to momentum?

### #5. The study of which of the following is very essential prior to quantum mechanics?

Explanation is given below

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## Quantum Physics Quiz Explanations

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- It must be 4 femtometer (10-15), which is, in fact, the diameter of the atom.
- ∇2Ψ(r) = 0 , if Ψ(r) = constant.

So, the first term in the Schrödinger’s wave

equation becomes zero. Hence, it becomes VΨ

= EΨ. - All the terms refer to energy which has the

unit MeV (mega electron volt). - Momentum, p = (2mE)1/2
- Hilbert space plays an important role in

quantum mechanics. So, one needs to go

through it before delving deep into quantum

mechanics.

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Uploaded by Bhautik Kapadiya

## Quantum Mechanics Quiz and answers

- For electron scattering experiment, the de-

Broglie wavelength of electrons used must be of the order of ___.

a. 4 fm ()

b. 1 nm

c. 4 mm

d. 1 zm

- If Ψ(r) = constant, then Schrödinger’s

equation becomes.*__*

a. EΨ = HΨ

b. EΨ = VΨ ()

c. VΨ = 0

d. None of the above - Which of the following has unit MeV ?

a. m(c^2)

b. pc

c. hν

d. all of the above () - Which of the following expressions refer to

momentum?

a. 2mE

b. (2mE)^1/2 ()

c. Ec

d. hw - The study of which of the following is very

essential prior to quantum mechanics?

a. Astrophysics

b. Chemistry

c. Hilbert Space ()

d. All of the above

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