Question

1. which of the following types of electromagnetic radiation carries the highest amount of energy per photon? radio waves ultraviolet radiation visible light gamma rays clear all

Explanation:

Step1: Recall the formula for photon energy

The energy of a photon is given by \( E = h
u=\frac{hc}{\lambda} \), where \( h \) is Planck's constant, \(
u \) is frequency, \( c \) is the speed of light, and \( \lambda \) is wavelength. Higher frequency (or shorter wavelength) means higher energy.

Step2: Compare frequencies of the options

• Radio waves: Lowest frequency (longest wavelength) among the options.
• Ultraviolet radiation: Higher frequency than radio, visible, but lower than gamma.
• Visible light: Frequency between UV and radio, lower than gamma.
• Gamma rays: Highest frequency (shortest wavelength) in the electromagnetic spectrum.

So gamma rays have the highest energy per photon.

Answer:

D. Gamma rays