Dual Nature of Matter and Radiation-De-Broglie Relation (NEET Physics): Questions 13 - 17 of 17

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Question number: 13

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

MCQ▾

Question

Velocity of a proton is c20 . Associated de-Broglie wavelength is (Take h = 6.626 × 10 -34 J-s)

Choices

Choice (4) Response

a.

2.64 × 10 -14 m

b.

2.64 × 10 -14 A

c.

2.64 × 10 -24 cm

d.

2.64 × 10 -24 mm

Question number: 14

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

MCQ▾

Question

The de-Broglie wavelength of an electron is 0.2 Å. Calculate the potential difference (approximate) required to retard it to rest-

Choices

Choice (4) Response

a.

3.76 × 10 3 V

b.

3.76 × l0 -3 V

c.

376.5 V

d.

3.76 × 10 3 eV

Question number: 15

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

MCQ▾

Question

Slope of V0ν curve is-

(Where, V 0 = Stopping potential and ν = frequency)

Choices

Choice (4) Response

a.

he

b.

h

c.

e

d.

ϕ0

Question number: 16

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

MCQ▾

Question

The ratio of wavelength of deuteron & proton accelerated by an equal potential is,

Choices

Choice (4) Response

a.

12

b.

21

c.

21

d.

12

Question number: 17

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

Appeared in Year: 2016

MCQ▾

Question

Electrons of mass m with De – Broglie wavelength λ fall on the target in a X – ray tube. The cutoff wavelength (λ0) of the emitted X – ray is:

Choices

Choice (4) Response

a.

λ0=λ

b.

λ0=2hmc

c.

λ0=2m2c2λ3h2

d.

λ0=2mcλ2h

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