Particle Nature of radiation

Particle Nature of radiation

12th Grade

10 Qs

quiz-placeholder

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Particle Nature of radiation

Particle Nature of radiation

Assessment

Quiz

Physics

12th Grade

Hard

Created by

Sanjeev Gupta

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The threshold frequency of potassium is 3x 1014 Hz. The work function is
1.0 x10-19 J
2.0x10-19 J
4.0x10-19 J
0.5 x 10-19 J

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The work function of a metal is metal is 3.3 x10-19 J. The maximum wavelength of the photons required to eject electron from the metal is
200 nm
300 nm
400 nm
600 nm

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The threshold wavelength of a metal surface is 600 nm. The wavelength of the incident light is 450 nm. The maximum kinetic energy of the incident photons will be nearest to
0.3 eV
0.6 eV
0.9 eV
1.2 eV

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The energy of the incident photon is 20 eV and the work function of the photosensitive metal is 10 eV. What is the stopping potential?
5 V
10 V
15 V
30 V

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The light photons of energy 1.5 eV and 2.5eV are incident on a metallic surface of work function 0.5 eV. What is the ratio of the maximum kinetic energy of the photoelectrons ?
¼
½
2
4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the threshold frequency be 2x1014 Hz, what is the work function ?
1.6 x10-19 J
3.2 x10-19 J
6.6 x 10-20 J
13.2 x 10-20 J

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Light of wavelength 4000 A is incident on a metal of work function 3.2 x10-19 J . What is the maximum kinetic energy of the emitted electrons ?
0.75x 10-19 J
1.1 x 10-19 J
1.75 x 10-19 J
2.2 x 10-19 J

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