Dual Nature of Matter and Radiation-De-Broglie Relation (NEET Physics): Questions 7 - 12 of 17

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2099 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

Question number: 7

» 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: 8

» 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: 9

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

MCQ▾

Question

An electron microscope uses 40 keV electrons. Find its resolving limit on the assumption that it is equal to the wavelength of the electron-

Choices

Choice (4) Response
a.

0.061 Å

b.

0.6 Å

c.

0.61 Å

d.

0.06 Å

Question number: 10

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

MCQ▾

Question

de-Broglie wavelength of an electron is 10 Å then velocity will be

Choices

Choice (4) Response
a.

7.2 × 10 7 m/s

b.

7.2 × 10 6 m/s

c.

7.2 × 10 4 m/s

d.

7.2 × 10 5 m/s

Question number: 11

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

MCQ▾

Question

Energy of an α-particle, having de-Broglie wavelength of 0.004 Å is approximately.

Choices

Choice (4) Response
a.

1275 eV

b.

1200 KeV

c.

1200 GeV

d.

1200 MeV

Question number: 12

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

MCQ▾

Question

A beam of electron accelerated through 70 kV strikes against a target. Which one of following

X-ray frequency will be missing?

Choices

Choice (4) Response
a.

16.9×1018Hz

b.

6×108Hz

c.

2×109Hz

d.

12×1018Hz

Sign In