What is the relationship between the frequency of electromagnetic waves and their wavelengths? a. as frequency increases, wavelength gets shorter. b. as frequency decreases, wavelength gets longer. c. as frequency decreases (or increases), wavelength gets longer (or shorter). d. a and b

D. A and B

Explanation

as frequency is inversely proportional to wavelength. formula for calculating wavelength is  

wavelength = wave velocity/frequency.

as wavelength is inversely proportional so increase in wavelength will cause decrease in frequency and vice versa . so A and B are the right answer.

A and B

Explanation:

For an electromagnetic wave, the relationship between frequency and wavelength is given by:

where is wavelength

            is frequency

           and c is speed of light.

From the formula we can say that frequency is inversely proportional to the wavelength as speed of light is a constant.

Hence

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)