# Quantum Physics Quiz for Fun & Quiz Competition Practice 2

Quantum Physics Quiz is here,

## Results

### #5. Uncertainty principle was given by _______ .

Explanation is given below

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## Quantum Physics Quiz Explanations

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1. Momentum , p = h/λ
or, p = (h/2π).(2π/λ)
or, p = ħ k
Where k = wave vector
2. Stationary states are quantum states in
which all observables are independent of time.
They correspond to a state with a single definite
energy.
3. A stationary state is also called an energy
eigen state, energy eigen vector, energy Eigen
ket.
4. IΨ> is called a ket vector. <ΨI is called a bra
vector. They make to form a bra-ket.
5. German physicist Werner Heisenberg gave
uncertainty principle which states that we can’t
measure both position and momentum
simultaneously.

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## Quantum Mechanics Quiz and answers

1. Which of the following expressions
represents momentum, where ħ = reduced
Plank’s constant?
a. ħw
b. ħk ()
c. ħf
d. ħc
2. Stationary state corresponds to a state with
__ .
a. single definite energy ()
b. more than one energy states
c. quantum superposition of different energies
d. none of the above
3. A stationary state is also called __ .
a. energy eigen state
b. energy eigen ket
c. energy eigen vector
d. all of the above ()
4. IΨ> is called a __ vector.
a. bra
b. ket ()
c. orthogonal
d. none of the above

1. Uncertainty principle was given by _ .
a. Erwin Schrodinger
b. Wolfgang Pauli
c. Werner Guttenberg
d. None of the above ()