Maximum kinetic energy of photon is '$$E$$' when wavelength of incident radiation is '$$\lambda$$'. If wavelength of incident radiations is reduced to $$\frac{\lambda}{3}$$ then energy of photon becomes four times. Then work function of the metal is
- A$$\frac{3 h c}{\lambda}$$
- B$$\frac{\mathrm{hc}}{3 \lambda}$$
- C$$\frac{h c}{\lambda}$$
- D$$\frac{\mathrm{hc}}{2 \lambda}$$
✓ Correct answer: B
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