Practice Question

1.State the definition of Electromagnetic waves.

Electromagnetic waves are transverse waves that transfer energy from the source of the waves to an absorber.

2. A radiowave and a visible light ray are emitted from the same point on the Earth, both travel in the same direction. Which one will reach their destination first?

Neither, they will both reach their destination at the same time. This is because electromagnetic waves travel at the same speed in air.

3. What is the relationship between wavelength and frequency in the electromagnetic spectrum?

As frequency increases, wavelength decreases.