Velocity of a body of mass m, having de Broglie wavelength λ, is given by
De Broglie wave nature and atoms

Quiz
•
Physics
•
10th - 12th Grade
•
Hard
Supreet Kaur
Used 25+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
v=λh/m
v=λm/h
v=λ/hm
v=h/λm
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Moving with the same velocity, which of the following has the longest de broglie wavelength?
β particle
α- particle
proton
neutron
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The wavelength associated with an electron accelerated through a potential difference of 100V is of the order
1000 Ao
10.5 Ao
100 Ao
1.2 Ao
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of these (having same kinetic energy) has the largest de broglie wavelength?
Electron
Alpha particle
Proton
Neutron
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If the kinetic energy of the particle is increased to 16times its previous value, the percentage change in the de Broglie wavelength of the particle is
25
75
60
50
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When a narrow accelerated beam of α particles is allowed to fall on a thin gold foil, most of the α particles pass straight through the foil or suffer only small deflections, This is because
α particles are positively charged
α particles are much massive than electrons
most of the space within the atom is empty
α particles move with high velocity
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An elementary particle of mass m and charge +e is projected with velocity v at a much more massive particle of charge Ze, where Z>0. What is the closest posssible approach of the incident particle?
Ze2/2πε0mv2
Ze2/8πε0mv2
Ze2/2πrε0mv2
Ze2/2πε0v2
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