Which of the following best describes the relationship between the frequency (ν) of electromagnetic radiation and its energy (E)?

• A. Energy increases as frequency increases.
• B. Energy decreases as frequency increases.
• C. Energy remains constant as frequency changes.
• D. Energy and frequency are unrelated.

Answer: (A)

Verified step by step guidance

1. Recall the fundamental relationship between the energy (E) of a photon and the frequency (\nu) of electromagnetic radiation, which is given by the equation: \[E = h \times \nu\] where \(h\) is Planck's constant.
2. Understand that Planck's constant (\(h\)) is a positive constant with a fixed value, so the energy is directly proportional to the frequency.
3. Analyze the proportionality: as the frequency (\nu) increases, the energy (E) must also increase because they are multiplied by a positive constant.
4. Recognize that this means energy and frequency have a direct, linear relationship, so energy does not decrease or remain constant when frequency changes.
5. Conclude that the correct description of the relationship is: 'Energy increases as frequency increases.'