The energy of a photon of light of wavelength $450 nm$ is
The energy of a photon of light of wavelength $450 nm$ is
- A
$4.4 \times {10^{ - 19}}J$
- B
$2.5 \times {10^{ - 19}}J$
- C
$1.25 \times {10^{ - 17}}J$
- D
$2.5 \times {10^{ - 17}}J$
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- [KVPY 2018]
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