Practice question

MCQ

Question

The frequency of a photon is 7.5 × 10¹⁴ Hz. What is its energy in joules? (h = 6.626 × 10⁻³⁴ J s)

Options

Choose one · Correct answer highlighted

4.9695 × 10⁻¹⁹ J Correct 3.313 × 10⁻¹⁹ J 6.626 × 10⁻¹⁹ J 2.48475 × 10⁻¹⁹ J

Explanation

E = hν = 4.9695×10⁻¹⁹ J.

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