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\( \mathrm{P} \)
An electromagnetic wave of wavelength ' \( \lambda \) ' is incident on
W a photosensitive surface of negligible work function. If ' \( \mathrm{m} \) ' mass is of photoelectron emitted from the surface has deBroglie wavelength \( \lambda_{d} \), then:
\( (2021) \)
(a) \( \lambda_{\mathrm{d}}=\left(\frac{2 \mathrm{mc}}{\mathrm{h}}\right) \lambda^{2} \)
(b) \( \lambda=\left(\frac{2 \mathrm{mc}}{\mathrm{h}}\right) \lambda_{\mathrm{d}}^{2} \)
(c) \( \lambda=\left(\frac{2 \mathrm{~h}}{\mathrm{mc}}\right) \lambda_{\mathrm{d}}^{2} \)
(d) \( \lambda=\left(\frac{2 m}{h c}\right) \lambda_{d}^{2} \)
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