Dual Nature of Matter and Radiation-De-Broglie Relation [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 1 - 6 of 35

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Question 1

Question MCQ▾

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

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 2

Question MCQ▾

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

Choices

Choice (4)Response

a.

b.

Not depend upon E

c.

d.

Edit

Question 3

Question MCQ▾

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 × 1033

b.

1.5 × 1029

c.

1.5 × 1031

d.

1.5 × 1035

Edit

Question 4

Question MCQ▾

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

Choices

Choice (4)Response

a.

No change

b.

Four time

c.

Double

d.

Half

Edit

Question 5

Question MCQ▾

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.

7.5 Å

b.

2.75 Å

c.

0.75 Å

d.

2.75 m

Edit

Question 6

Question MCQ▾

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

b.

Plot of Momentum vs De-Broglie Wavelength – Choice B

c.

Plot of Momentum vs De-Broglie Wavelength – Choice C

d.

Plot of Momentum vs De-Broglie Wavelength – Choice D

Edit