MCQ
Photoelectric effect was explained by :
- ANewton
- ✓Einstein
- CPlanck
- DBohr
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$I$ $(II)$
Radiation Wavelength
$(a)$ Microwave $(i)$ $100 m$
$(b)$ Gamma rays $(ii)$ $10^{-15} m$
$(c)$ $A.M.$ radio waves $(iii)$ $10^{-10} m$
$(d)$ $X-$rays $(iv)$ $10^{-3} m$



