Question

Which of the following is/are true about electromagnetic radiation?

1.Wavelength is inversesly proportional to frequency.2.Frequency has units of s-1 or Hz.3.Waves of different wavelengths travel at different speeds in a vacuum

Answer 1

1. True. Wavelength and frequency are inversely proportional to each other. As wavelength increases, frequency decreases, and vice versa.

2. True. Frequency is measured in units of s⁻¹ or Hz (hertz).

3. False. In a vacuum, all electromagnetic waves, regardless of their wavelength, travel at the same speed, which is the speed of light.