De Broglie Waves NEET Questions

Physics - Dual Nature of Matter and Radiation

De Broglie Waves MCQ Questions


1.
According to de Broglie's hypothesis, the wavelength associated with a moving particle is given by:
A.
位 = h/p
B.
位 = p/h
C.
位 = h/mv
D.
位 = p/m
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ANSWER :
A. 位 = h/p
2.
Which physical quantity is responsible for the wave nature of matter?
A.
Charge
B.
Mass
C.
Momentum
D.
Energy
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ANSWER :
C. Momentum
3.
According to de Broglie, the wavelength associated with a moving particle is given by:

NEET - 2015

A.
h/p
B.
p/h
C.
hm/p
D.
pm/h
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ANSWER :
A. h/p
4.
What is the de Broglie wavelength of an electron moving with velocity v?
A.
位 = h/mv
B.
位 = p/h
C.
位 = hv/p
D.
位 = mv/h
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ANSWER :
A. 位 = h/mv
5.
If the momentum of a particle is doubled, what happens to its de Broglie wavelength?
A.
It doubles
B.
It becomes half
C.
It remains unchanged
D.
It quadruples
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ANSWER :
B. It becomes half
6.
Which fundamental principle does de Broglie's hypothesis extend?
A.
Law of conservation of energy
B.
Principle of wave-particle duality
C.
Heisenberg鈥檚 uncertainty principle
D.
Newton鈥檚 laws of motion
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ANSWER :
B. Principle of wave-particle duality