Free Printable Quantum Mechanics

1.

Concept of "Quanta" was coined by

a)

Albert Einstein

b)

Max Planck

c)

Louis de Broglie

d)

Werner Heisenberg

2.

Waves that are associated with the particle

a)

Acoustic waves

b)

Electromagnetic waves

c)

Matter waves

3.

Concept of matter waves was proposed by

a)

Max Planck

b)

Albert Einstein

c)

Lenard

d)

Louis de Broglie

4.

$\lambda=\frac{h}{\sqrt[]{2meV}}$ is the de Broglie wavelength of

a)

Proton with uniform velocity

b)

Electron with uniform velocity

c)

Photon

d)

accelerated particle

5.

For the massive size particle, the wavelength will be

a)

shorter

b)

longer

c)

in visible region

6.

Particles, at rest exhibits the wave nature

a)

Yes

b)

No

7.

Heisenberg Uncertainty principle is

a)

$\Delta x\ \Delta p\ge\frac{h}{4\pi}$

b)

$\Delta x\ \Delta p\ <\frac{h}{4\pi}$

c)

$\Delta x\ \Delta p\le\frac{h}{4\pi}$

d)

$\Delta x\ \Delta p=\frac{h}{4\pi}$

8.

In Quantum mechanics, which of the following concept plays a vital role

a)

Position

b)

Velocity

c)

Momentum

d)

Energy

9.

In Quantum mechanics, the uncertainty is due to

a)

inefficiency of measuring instruments

b)

insufficient measuring techniques

c)

wave nature of the particle

d)

All the above

10.

The path of the quantum particle can be traced out with precision

a)

True

b)

False

11.

Velocity of the wave packet is called

(a)

12.

The superimposition of particles with slightly different frequencies result in

(a)

13.

Comparing which experimental data, non existence of an electron inside the nucleus can be verified using Heisenberg Principle.

a)

$\alpha\ decay$

b)

$\beta$ decay

c)

$\gamma$ radiation

d)

None

14.

deBroglie wavelength is given by

a)

$\lambda=\ \frac{h}{p}$

b)

$\lambda=\ \frac{h}{mv}$

c)

$\lambda=\ \frac{h}{\sqrt[]{2meV}}$

d)

All the above

15.

Relation between the $v_p$ & $v_g$

a)

$v_p$ $v_g$ = c

b)

$v_p$ $v_g$ = $c^2$

c)

$c^2$ $v_p$ = $v_g$

d)

c $v_g$ = $v_p$

Quantum Mechanics_Activity I

Total questions: 15

Worksheet time: 8mins

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