
PGTRB PHY UNIT 8
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Physics
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The tunnelling through a potential barrier increases if
Hight and width of the barrier increased
Height and width of the barrier reduced
Height increased and width reduced of the barrier
Height reduced and width increased of the barrier
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A free particle is said to be that if it is moving in a
Force free field
Gravitation field
Electric field
Magnetic field
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The energy difference between the ground state and first excited state of an electron in one dimensional rigid box of length 1A° is
113.5 eV
115.0eV
150.8eV
113.1eV
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The product of the uncertainties of a particle can never be smaller than the number of the order
h cross
h cross/2
3h cross/2
h cross^2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The Fermi Golden rule obtained using time dependent perturbation theory
Is time dependent
Is time independent
Depends on time harmonically
Is partially time dependent
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The method of partial wave analysis is applicable to
Long range potential
Short range potential
Spherically symmetric potential
Any type of arbitrary potential
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For Hydrogen atom
The ground state is degenerate
The excited state are degenerate
The energy spectrum is discrete and equally spaced
The excited states are non degenerate
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