Final answer:
If a wave's wavelength is short, its frequency must be high, and it carries more energy due to the inverse relationship between wavelength and frequency. Electromagnetic waves with shorter wavelengths are more energetic compared to those with longer wavelengths. Therefore correct option is B
Step-by-step explanation:
If a wave's wavelength is short, it means that its frequency must be high. This is due to the inverse relationship between wavelength and frequency, which states that as one increases, the other decreases. In the context of electromagnetic radiation, a shorter wavelength also implies that the wave carries more energy. Therefore, short waves are energetic and have higher frequencies. This can be understood by considering a heavy rope: more energy is needed to create short, tight waves in the rope compared to long, wide waves.
For example, in the electromagnetic spectrum, violet light has a shorter wavelength than red light, which means violet light has a higher frequency and carries more energy than red light.
Regarding the provided statements, it is important to note that the speed of electromagnetic radiation does not increase with wavelength. Instead, all electromagnetic waves travel at the same speed in a vacuum. Changes in wavelength and frequency affect the energy of the waves but not their speed.