Question

Consider the following kinds of electromagnetic waves:

(A) gamma rays
(B) microwaves
(C) radio waves
(D) visible light
(E) x-rays

(a) Rank the kinds of waves according to their wavelength ranges from those with the largest typical or average wavelength to the smallest, noting any cases of equality. Use only '>' or '=' symbols. If any elements are equal, show their equality in alphabetical order - for example: A > B = C.

(b) Rank the kinds of waves according to their frequencies from highest to lowest. Use only '>' or '=' symbols. If any elements are equal, show their equality in alphabetical order - for example: A > B = C.

(c) Rank the kinds of waves according to their speeds in vacuum from fastest to slowest. Use only '>' or '=' symbols. If any elements are equal, show their equality in alphabetical order - for example: A > B = C.

Answer 1

Answer:

According to wavelengths in descending order: C, B, D, E and A

According to frequencies in descending order: A, E, D, B and C

According to speeds in vacuum: A =B =C =D =E

Explanation:

in the EM spectrum, radio waves have the longest wavelength while gamma rays have the shortest wavelength.

All EM waves travel with the same speed of $3*10^8m/s$ in a vacuum.