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Dual Nature of Radiation and Matter — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsDual Nature of Radiation and Matter2 Marks
Question
Answer the following question:
What is so special about the combination e/m? Why do we not simply talk of e and m separately?
✓

Answer

Electric and magnetic field is related with basic equations like,
eV =1/2 mv2 or eE = ma and,
eBv = mv2/r
In all these equations, the dynamics of electrons is determined not by e and m separately but by the combination e/m. Hence, we do not talk of e and m seperately.

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