Question Detail
Question
According to the electromagnetic spectrum chart on page 4, which of the following electromagnetic waves has the longest wavelength?
Correct Answer
Option D is the correct answer.
Detailed Explanation
Page 4 displays a chart of the electromagnetic spectrum. It shows that radio waves have wavelengths up to 3 x 104 m, which is significantly longer than gamma rays (3 x 10-12 m), X-rays (3 x 10-10 m to 3 x 10-8 m), or ultraviolet (3 x 10-8 m to 4.0 x 10-7 m). Therefore, radio waves have the longest wavelength among the options provided.
Hint
Refer to the 'Wavelength (m)' scale on the electromagnetic spectrum chart.