Quantum Physics Quiz for Fun & Quiz Competition Practice 2

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#1. Which of the following expressions represents momentum, where ℏ = reduced Planck's constant?

#2. Stationary state corresponds to a state with ________ .

#3. A stationary state is also called ______ .

#4. IΨ> is called a ______ vector.

#5. Uncertainty principle was given by _______ .

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Explanation is given below

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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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Uploaded by Bhautik Kapadiya 

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 ()
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