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The energy of light of frequency 2.0 x 10\(^{15}\)Hz is  (h = 6.63 x 10\(^{-34}\)Js)

Physics
JAMB 2024

The energy of light of frequency 2.0 x 10\(^{15}\)Hz is  (h = 6.63 x 10\(^{-34}\)Js)

  • A. 3.33 x 10\(^{-18}\)J
  • B. 1.33 x 10\(^{-18}\)J
  • C. 1.33 x 10\(^{-19}\)J
  • D. 3.33 x 10\(^{-19}\)J
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Correct Answer: Option B
Explanation

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

There is an explanation video available below.


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Explanation Video

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