Dual Nature of Matter NEET Questions

Physical Chemistry - Atomic Structure

Dual Nature of Matter MCQ Questions


1.
Who proposed the concept of matter waves?
A.
Planck
B.
Einstein
C.
De Broglie
D.
Bohr
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ANSWER :
C. De Broglie
2.
The wavelength of matter waves is given by:
A.
位 = h/mv
B.
位 = mv/h
C.
位 = h/v
D.
位 = h/m
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ANSWER :
A. 位 = h/mv
3.
De Broglie wavelength is inversely proportional to:
A.
Mass
B.
Momentum
C.
Speed
D.
All of these
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ANSWER :
D. All of these
4.
The De Broglie wavelength of an electron moving with velocity v is:

NEET - 2019

A.
h/mv
B.
mv/h
C.
h/v
D.
v/h
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ANSWER :
A. h/mv
5.
Which equation represents the momentum of a photon?
A.
p = mv
B.
p = h/位
C.
p = 位/h
D.
p = h谓
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ANSWER :
B. p = h/位
6.
If the speed of a moving particle is doubled, its De Broglie wavelength:
A.
Increases by 2 times
B.
Decreases by 2 times
C.
Remains the same
D.
Becomes zero
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ANSWER :
B. Decreases by 2 times