Dual Nature of Matter and Radiation (NEET Physics): Questions 6 - 10 of 33

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Question number: 6

» Dual Nature of Matter and Radiation » De-Broglie Relation

MCQ▾

Question

In photoelectric effect if intensity of light is doubled then maximum kinetic energy of photoelectrons will become

Choices

Choice (4) Response

a.

Four time

b.

Half

c.

No change

d.

Double

Question number: 7

» Dual Nature of Matter and Radiation » Einstein's Photoelectric Equation

MCQ▾

Question

Ultraviolet light of wavelength 280 nm is used in an experiment on photo electric effect with lithium (Φ = 2.5 eV) cathode.

(1) The maximum kinetic energy is 1.9 eV

(2) The stopping potential is 1.9 V

(3) The maximum kinetic energy is 4.4 V

(4) The stopping potential is 4.4 eV

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

1 and 3 are correct

b.

2 and 4 are correct

c.

1, 2 and 3 are correct

d.

1 and 2 are correct

Question number: 8

» Dual Nature of Matter and Radiation » Photoelectric Effect

MCQ▾

Question

Quantum nature of light is explained by which of the following phenomenon?

Choices

Choice (4) Response

a.

Maxwell electromagnetic theory

b.

Huygens wave theory

c.

de- Broglie theory

d.

Photoelectric effect

Question number: 9

» Dual Nature of Matter and Radiation » De-Broglie Relation

MCQ▾

Question

From rest an electron is accelerated between two such points which has potential 20 & 40 volts respectively. Associated de-Broglie wavelength of electron is-

Choices

Choice (4) Response

a.

2.75 Å

b.

0.75 Å

c.

2.75 m

d.

7.5 Å

Question number: 10

» Dual Nature of Matter and Radiation » De-Broglie Relation

MCQ▾

Question

Which of the following figure represents variation of particle momentum and the associated de-Broglie wavelength?

Choices

Choice (4) Response

a.

Plot of momentum vs de-Broglie wavelength – Choice A

Plot of Momentum vs De-Broglie Wavelength – Choice A

Figure shows the plot of particle momentum and the associated de-Broglie wavelength.

b.

Plot of momentum vs de-Broglie wavelength – Choice B

Plot of Momentum vs De-Broglie Wavelength – Choice B

Figure shows the plot of particle momentum and the associated de-Broglie wavelength.

c.

Plot of momentum vs de-Broglie wavelength – Choice C

Plot of Momentum vs De-Broglie Wavelength – Choice C

Figure shows the plot of particle momentum and the associated de-Broglie wavelength.

d.

Plot of momentum vs de-Broglie wavelength – Choice D

Plot of Momentum vs De-Broglie Wavelength – Choice D

Figure shows the plot of particle momentum and the associated de-Broglie wavelength.

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