MCQ
The main defect of Bohr's atom model is :
- Amixing of classical and quantum theories
- Bexclusion of nuclear motion
- Cfailed to explain the fine structure of spectral lines
- ✓failed to explain larger atoms
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$E_x=36\,sin\,(1.20 \times 10^7z -3.6 \times 10^{15}\,t)\,V/m$
The average intensity of the beam will be.....$W/m^2$
