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Compton effect

Total questions: 21

Worksheet time: 43mins

Name
Class
Date
1.

Compton effect expt. is carried out with

a)

x ray

b)

gama ray

c)

visible light

d)

heat waves

2.

Compton scattering establishes

a)

photonic nature of electromagnetic wave

b)

wave nature of electromagnetic wave

c)

both wave and particle nature of electro magnetic

d)

electron is a matter

3.

Elements of low atomic mass are preferred in Compton effect

a)

low atomic mass elements are easily available

b)

with low atomic mass coulombic attaraction is less and greater probability of making electron free

c)

with low atomic mass coulombic attaraction is high and greater probability of making electron free

d)

with low atomic mass coulombic attaraction is less and lesser probability of making electron free

4.

Photonic energy of x-ray photon of wave lenght 0.1 A is

a)

close to 2 eV

b)

close to 2x 104 eV

c)

close 0.2 eV

d)

close to 2 x 102 eV

5.

In Compton effect we use X-ray because

a)

it is easy to produce

b)

it has very small wave length

c)

x-ray photon has very high energy

d)

it is a X-ray diffraction experiment

6.

The ratio of de Broglie wave length of a moving proton and moving electron is

a)

2:1

b)

1:2

c)

1:1

d)

3:1

7.

Estimate de Broglie wave length of a photon moving with energy 100 eV and a electron moving under the electric field of 100 V.

a)

photon 120 Angstorm and electron 1.21 Angstrom

b)

photon 1.20 Angstorm and electron 121 Angstrom

c)

photon 120 Angstorm and electron 121 Angstrom

d)

photon 1.20 Angstorm and electron 1.21 Angstrom

8.

Compton wave length is

a)

hm0C\frac{h}{m0C}

b)

hmc\frac{h}{mc}

c)

hλC\frac{h}{\lambda C}

d)

(1−Cosα)\left(1-Cos\alpha\right)

9.

Compton Shift given by  Δλ=λc(1−Cosα)\Delta\lambda=\lambda c\left(1-Cos\alpha\right)  becomes maximum at

a)

scattering angle equal to 90 degree

b)

scattering angle equal to 0 degree

c)

scattering angle equal to 180 degree

d)

scattering angle equal to 360 degree

10.

Wave particle duality means

a)

a wave can show wave behavior

b)

a particle can show particle behavior

c)

a wave can some times show the property of particle

d)

a wave can some times show the property of wave and matter both

11.

Which one of the following is most suitable for Compton effect

a)

Heat waves

b)

X-ray

c)

gama ray

d)

visible light

12.

We do not use heavy atoms in Compton effect study because

a)

in heavy atom electron-nuclear coulombic attraction is very strong

b)

in heavy atom electron-nuclear coulombic attraction is very weak

c)

in heavy atom electron-electron coulombic attraction is very strong

d)

in heavy atom electron-visible light interaction is very weak

13.

Name experiments where light is wave like and where particle like

4 lines
14.

An electron and a proton have same de Broglie wave length then relation between energy of electron and proton is. Use the relation  λ=hmv  and E=12 mv2\lambda=\frac{h}{mv}\ \ and\ E=\frac{1}{2\ }mv2  

a)

Electron energy > Proton energy

b)

Electron energy < Proton energy

c)

Electron energy = Proton energy

d)

both energies are infinite

15.

de Borglie hypothesis states

a)

any matter can show wave nature

b)

any matter sometimes becomes wave

c)

any matter can sometime show the property of wave

d)

only electron can sometime show the property of wave

16.

What do you read here

4 lines
17.
a)

in picture wave group is formed by superposition of first two waves

b)

in picture wave group is formed by superposition amplitude of first two waves

c)

in picture wave group is formed by superposition of phase of first two waves

d)

in picture wave group is formed by superposition particle displacement of first two waves

18.
a)

Group velocity is the velocity of maximum amplitude

b)

Group velocity is the velocity of any amplitude

c)

Group velocity is the velocity of maximum displacement

d)

Group velocity is the velocity of constant phase

19.
a)

phase velocity is the velocity of wave of constant phase

b)

phase velocity is the velocity of wave of constant amplitude

c)

phase velocity is the velocity of wave of maxm phase

d)

phase velocity is the velocity of wave of maxm amplitude

20.

Group and Phase velocity are expressed as

a)

vp=ωk and vg=dωdkvp=\frac{\omega}{k}\ and\ vg=\frac{d\omega}{dk}

b)

vp=dωdk, vg=ωkvp=\frac{d\omega}{dk},\ vg=\frac{\omega}{k}

c)

vp=c and vg=cvp=c\ \ and\ vg=c

d)

vp=vgvp=vg

21.

product of phase velocity vp and group velocity vg i.e v vp⋅vg=vp\cdot vg=  

a)

c

b)

c2

c)

c3

d)

1

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