Dual Nature of Matter NEET Questions

Physical Chemistry - Atomic Structure

Dual Nature of Matter MCQ Questions


1.
Who proposed the dual nature of matter?
A.
Niels Bohr
B.
Albert Einstein
C.
Louis de Broglie
D.
Werner Heisenberg
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ANSWER :
C. Louis de Broglie
2.
In which year was the dual nature of matter proposed?
A.
1900
B.
1932
C.
1924
D.
1913
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ANSWER :
C. 1924
3.
The de Broglie equation relates wavelength (位) and momentum (p) as:
A.
位 = h 脳 p虏
B.
位 = h 脳 p
C.
位 = p/h
D.
位 = h/p
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ANSWER :
D. 位 = h/p
4.
According to de Broglie, the wavelength associated with a particle of mass m moving with velocity v is:
A.
位 = h 脳 mv
B.
位 = mv/h
C.
位 = h/(mv)
D.
位 = h/(mv虏)
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ANSWER :
C. 位 = h/(mv)
5.
The de Broglie wavelength is significant for:
A.
Both equally significant
B.
Microscopic particles like electrons
C.
Only photons
D.
Macroscopic objects only
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ANSWER :
B. Microscopic particles like electrons
6.
Why are wave properties of macroscopic objects not observed?
A.
Their wavelengths are extremely small (negligible)
B.
They don't have wave properties
C.
Their wavelengths are too large
D.
They are too fast
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ANSWER :
A. Their wavelengths are extremely small (negligible)