Dual Nature of Matter and Radiation (NEET Physics): Questions 11 - 14 of 34

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Question number: 11

» 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.

Question number: 12

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

MCQ▾

Question

One electron & one proton have equal energies then ratio of associated de-Broglie wavelength will be,

Choices

Choice (4) Response
a.

1836:1

b.

(1836)2:1

c.

1:(1836)2

d.

1836:1

Question number: 13

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

MCQ▾

Question

A hydrogen atom moving at a speed v absorbs a photon of wavelength 122 nm and stops. Find the value of v. (Mass of hydrogen atom = 1.67 × 10 -27 kg)

Choices

Choice (4) Response
a.

3.05 m/s

b.

3.5 m/s

c.

32.5 m/s

d.

3.25 m/s

Question number: 14

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

Assertion-Reason▾

Assertion (Ꭺ)

Photosensitivity of a metal is large if its work function is small.

Reason (Ꭱ)

Work function = hf 0. where f 0 is the threshold frequency.

Choices

Choice (4) Response
a. Both Ꭺ and Ꭱ are false
b. Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ
c. Ꭺ is true but Ꭱ is false
d. Ꭺ is false but Ꭱ is true

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