De Broglie Waves NEET Questions

Physics - Dual Nature of Matter and Radiation

De Broglie Waves MCQ Questions


7.
The de Broglie wavelength of a particle is inversely proportional to its:
A.
Momentum
B.
Velocity
C.
Mass
D.
Charge
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ANSWER :
C. Mass
8.
What is the unit of de Broglie wavelength?
A.
Meter
B.
Angstrom
C.
Nanometer
D.
Centimeter
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ANSWER :
B. Angstrom
9.
For which of the following particles will the de Broglie wavelength be the shortest if they have the same velocity?
A.
Electron
B.
Neutron
C.
Proton
D.
Alpha particle
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ANSWER :
D. Alpha particle
10.
The de Broglie wavelength of a moving particle depends on:
A.
Only its charge
B.
Only its velocity
C.
Both its mass and velocity
D.
None of the above
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ANSWER :
C. Both its mass and velocity
11.
What is the significance of de Broglie waves?
A.
They explain the wave nature of light
B.
They explain the particle nature of matter
C.
They explain the nature of quantum mechanics
D.
They are used to explain macroscopic motion
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ANSWER :
C. They explain the nature of quantum mechanics
12.
What is the de Broglie wavelength of an electron moving with velocity v?

NEET - 2016

A.
h/mv
B.
mv/h
C.
hv/m
D.
mh/v
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ANSWER :
A. h/mv