Find the energy of a photon in joule having wavelength 2ooo angstrom

1.	Find the energy of a photon in joule having wavelength 2ooo angstrom
Answer» Given , WAVELENGTH of photon = 2000 Å We KNOW that , The ENERGY of photon is given by $\boxed{ \sf{Energy \: (E) = \frac{hc}{λ} }}$ THUS , $\sf \mapsto E = \frac{6.6 \times {(10)}^{ - 34} \times 3 \times {(10)}^{8} }{2000 \times {(10)}^{ - 10} } \\ \\ \sf \mapsto E =9.9 \times {(10)}^{ - 19} \: \: joule$ $\sf \therefore\underline{The \: energy \: of \: photon \: is \: 9.9 \times {(10)}^{ - 19} \: \: joule}$

Answer»

Given ,

WAVELENGTH of photon = 2000 Å

We KNOW that ,

The ENERGY of photon is given by

$\boxed{ \sf{Energy \: (E) = \frac{hc}{λ} }}$

THUS ,

$\sf \mapsto E = \frac{6.6 \times {(10)}^{ - 34} \times 3 \times {(10)}^{8} }{2000 \times {(10)}^{ - 10} } \\ \\ \sf \mapsto E =9.9 \times {(10)}^{ - 19} \: \: joule$

$\sf \therefore\underline{The \: energy \: of \: photon \: is \: 9.9 \times {(10)}^{ - 19} \: \: joule}$

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Find the energy of a photon in joule having wavelength 2ooo angstrom

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