The electron in a hydrogen atom makes a transition 
, where 
and 
are the principal quantum numbers of the two states. Assume the Bohr model to be valid. The time period of the electron in the initial state is eight times that in the final state. The possible values of n1 and n2 are
|
(a) |
(b) |
(c) |
(d) |
(d) 
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The path executed by a charged particle whose motion is perpendicular to magnetic field i
|
(a) A straight line |
(b) An ellipse |
(c) A circle |
(d) A helix |
For the study of the helical structure of nucleic acids, the property of electromagnetic radiation generally used is
|
(a) Reflection |
(b) Interference |
(c) Diffraction |
(d) Polarization |
