JAMB - Physics (2024 - No. 28)
The energy of light of frequency 2.0 x 10\(^{15}\)Hz is (h = 6.63 x 10\(^{-34}\)Js)
3.33 x 10\(^{-18}\)J
1.33 x 10\(^{-18}\)J
1.33 x 10\(^{-19}\)J
3.33 x 10\(^{-19}\)J
Forklaring
To calculate the energy of light, we can use the formula:
E = h x f
h = 6.63 x 10\(^{-34}\)Js
f = 2.0 x 10\(^{15}\)Hz
E = 6.63 x 10\(^{-34}\) x 2.0 x 10\(^{15}\) = 1.326 x 10\(^{-18}\)J