Dual Nature of Matter and Radiation (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 1 - 5 of 36

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Question number: 1

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

MCQ▾

Question

One electron & one proton is accelerated by equal potential. Ratio of their de-Broglie wavelengths is-

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 2

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

MCQ▾

Question

A photon and an electron have equal energy E. Equation is proportional to

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Not depend upon E

Question number: 3

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

MCQ▾

Question

The separation between Bragg’s planes in a crystal is 10 Å. Then the wavelength of those X-rays which can be diffracted by this crystal is-

(1) 5 Å (2) 10 Å

(3) 20 Å (4) 25 Å

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

Choices

Choice (4) Response

a.

1 and 2 are correct

b.

2 and 4 are correct

c.

1 and 3 are correct

d.

1, 2 and 3 are correct

Question number: 4

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

MCQ▾

Question

An electromagnetic radiation of frequency 3 × 10 15 cycles per second falls on a photo electric surface whose work function is 4.0 eV Find out the maximum velocity of the photo electrons emitted by the surface-

Choices

Choice (4) Response

a.

1.73 × 10 6 m/s

b.

13.4 × 10 -19 m/s

c.

19.8 × 10 -19 m/s

d.

Question does not provide sufficient data or is vague

Question number: 5

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

MCQ▾

Question

A radio station is transmitting waves of wavelength 300 m. If diffracting power of transmitter is 10 kW, then numbers of photons diffracted per second is-

Choices

Choice (4) Response

a.

1.5 × 10 35

b.

1.5 × 10 33

c.

1.5 × 10 31

d.

1.5 × 10 29

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