Given that : Planck’s constant = 6.6 × 10–27 erg second. Velocity of light = 3 × 1010 cm/s. The energy of a photon of wavelength 3,000 Å will be 

1
6.6 × 10–12 erg
2
13.2 × 10–12 erg
3
3.3 × 10–12 erg
4
None of these

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