Have an account?
Skip to Content
Build your own quiz
Suggestions for you
10 questions
Show Answers
See Preview
- 1. Multiple Choice
Velocity of a body of mass m, having de Broglie wavelength λ, is given by
v=λh/m
v=λm/h
v=λ/hm
v=h/λm
- 2. Multiple Choice
Moving with the same velocity, which of the following has the longest de broglie wavelength?
β particle
α- particle
proton
neutron
- 3. Multiple Choice
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
Which of these (having same kinetic energy) has the largest de broglie wavelength?
Electron
Alpha particle
Proton
Neutron
- 5. Multiple Choice
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
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
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
- 8. Multiple Choice
According to Rutherford's atomic model, the electrons inside an atom are
stationary
centralized
non stationary
none of these
- 9. Multiple Choice
If an α particle collides haed on with a nucleus , what is impact parameter
Zero
infinite
10-10m
1010m
- 10. Multiple Choice
An alpha nucleus of energy 1/2mv2 bombards a heavy target of charge Ze . Then , the distance of closest approachfor the alpha particle will be proportional to
v2
1/m
1/v4
1/Ze
- Answer choicesTagsAnswer choicesTags