The energy of a photon is given by E = hf. If the frequency is doubled, the energy

Answer and explanation

Correct answer: B. doubles

  1. Step 1: E is directly proportional to f. Answer: doubles. Why not the others: halves: Energy is proportional to frequency. quadruples: That would need a squared relation. stays the same: Energy depends on frequency.

Practise more Electricity, waves and modern physics.

Free questions with an explanation for every one, and full timed CSAT Suneung mock tests.