# Quantum Mechanics Quiz for Fun & Quiz Competition Practice

Quantum Mechanics Quiz is here,

## Results

### #5. Quantum computers use __ .

Explanation is given below

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## Quantum Mechanics Quiz Explanations

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1. kinetic energy, T = 1/2 mv^2

multiplying and dividing m, we get,
T = (1/2 m^2.v^2)/m
= (p^2)/2m ( p= mv)

1. Unit of power is watt, which is
watt = joule/second
Unit of Plank constant is joule.second
so, watt.(second)^2 = (joule/second).
(second)^2 = joule.second
which is, in fact, the unit of Plank’s constant.
2. <ΨIΨ> = 1 is the property of
orthonormality. For example, in cartesian
co-ordinate, i.i = 1
<ΨIF> = 0 is the property of
orthogonality, where Ψ and F are two wave
functions. And they are orthogonal.
For instance, in cartesian co-ordinates, i.j =
0
3. Schrödinger’s cat experiment uses
quantum superposition as its basis idea.
The fact that the cat can be both alive and
dead at the same time is an analogy of
quantum superposition.
4. Quantum computers use qubits the
same way our computers use binary
numbers 0 and 1. But quantum computers
use the principle of quantum superposition.
Therefore, 0 and 1 exist in a superposed
state.

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## Quantum Physics Quiz and answers

1. Which of the following is an expression
for kinetic energy?
a. (p^2)/2m ()
b. (p^2).(c^2)
c. p(c^2)
d. (m^2).(c^4)

2. Which of the following is the unit of
plank’s constant?

a. joule.hertz

b. joule.metre

c. erg.metre

d. watt.(second)^2 ()

1. <ΨIΨ> = 1, which kind of braket property
is this?
a. orthogonality
b. orthonormality ()
c. linearity
d. conjugate symmetry
2. Schrödinger’s cat thought experiment
represents which of the following idea?
a. quantum superposition ()
b. quantum tunneling
c. quantum consciousness
d. none of the above
3. Quantum computers use __ .
a. binary number system
b. hexagonal number system
c. qubits ()
d. none of the above 