Question

If an electromagnetic wave’s frequency doubles in a vacuum, what are the other effects on the wave?

Answer 1

Its wavelength and period are halved and the speed is unchanged or the wavelength divides in half and speed stays the same.

This answer isn't much but i think it's helpful
Hope this helped :)
have a great day

Answer 2

Wavelength becomes half

Step-by-step explanation:

If the frequency of the electromagnetic wave is doubled. The wavelength becomes half. The speed of the wave remains constant in a medium.

The relationship between the wavelength, frequency and speed is:

`\lambda =(v)/(f)`

So, if frequency doubles, wavelength becomes half.

Also, period
`T =(1)/(f)`

So, the period would also become half.