How much energy is there in a photon with a wavelength of 2.84*10^-20?

1 Answer
Junaid Mirza
May 10, 2018

#"7.0 μJ"# approx.

Explanation:

Energy of photon is given by the formula

#"E" = "hc"/λ#

Where

  • #"h ="# Planck’s constant
  • #"c ="# Speed of light
  • #"λ ="# Wavelength of light

#"E" = (6.626 × 10^-34 "J" cancel"s" × 3 × 10^8\ cancel"m"//cancel"s")/(2.84 × 10^-20\ cancel"m") ≈ 7.0 × 10^-6\ "J" ≈ "7.0 μJ"#

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