What is the energy of photon whose wavelength is $6840\,\mathop A\limits^o $ ?......$eV$
What is the energy of photon whose wavelength is $6840\,\mathop A\limits^o $ ?......$eV$
- [AIIMS 2007]
- A
$1.81$
- B
$3.6$
- C
$-13.6$
- D
$12.1$
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- [JEE MAIN 2024]