What is the approximate energy of a photon having a frequency of 4 x 10^7 Hz? (h = 6.6 x 10^-34 J . s)

2.64 × J

Explanation:

I think you should mark it a physics question instead but anyway.

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The Planck equation should be applied:

E = hv , while E is energy of proton; h is Planck constant; and v is frequency.

E = 6.6 × × 4 ×

  = 6.6 × 4 ×

  = 2.64 × J

did anyone actually do this? like if anyone has submitted this i rly need .

i would say b

explanation:

but i think i would need more information than that