Practice 1,814 free Class 12 Physics - Dual Nature of Radiation and matter questions with answers and step-by-step solutions.
The cathode rays have particle nature because of the fact that
In a Thomson set-up for the determination of $e/m$,electrons accelerated by $2.5 \ kV$ enter the region of crossed electric and magnetic fields of strengths $3.6 \times 10^4 \ Vm^{-1}$ and $1.2 \times 10^{-3} \ T$ respectively and go through undeflected. The measured value of $e/m$ of the electron is equal to
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