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JAMB Physics 2002 Question 43

Question 43

Modern Physics

The energy associated with the photon of a radio transmission at 3 × 105Hz is [h = 6.63 × 10−34 Js]

  1. A.1.30 × 10−29 J
  2. B.2.00 × 10−29 J
  3. C.1.30 × 10−28 J
  4. D.2.00 × 10−28 J
Show the answer and explanation

Answer: D (2.00 × 10−28 J)

Explanation

E = hf = 6.63 × 10−34 × 3 × 105 ≈ 2.0 × 10−28 J.