Answer:
E = 1.89×10⁻¹⁹ J
Explanation:
Given data:
Wavelength of photon = 105 nm (105 ×10⁻⁹ m)
Energy of photon = ?
Solution:
Formula:
E = hc/λ
h = plancks constant = 6.63×10⁻³⁴ Js
c = speed of wave = 3×10⁸ m/s
by putting values,
E = 6.63×10⁻³⁴ Js ×3×10⁸ m/s / 105 ×10⁻⁹ m
E = 19.89×10⁻²⁶ J.m / 105 ×10⁻⁹ m
E = 0.189×10⁻¹⁷ J
E = 1.89×10⁻¹⁹ J
