Which of the following kinds of electromagnetic waves has the longest wavelength?

A. gamma rays

B. ultraviolet light

C. red light

D. radio waves

***I am not sure.. would it be ultraviolet rays? :/

Question

Which of the following kinds of electromagnetic waves has the longest wavelength?

A.       gamma rays

B.       ultraviolet light

C.       red light

D.       radio waves

***I am not sure.. would it be ultraviolet rays? :/

anonymous · Answer

or sorry, radio waves? :/

michele_laino · Answer

the longest wave length are associated to the littlest frequency, since we have:
$$\lambda \nu  = c = {\text{constant}}$$

anonymous · Answer

ohh okay! so which one has the littlest frequency ?

michele_laino · Answer

I think radiowaves

anonymous · Answer

ahh okay!! thank you!! :D

michele_laino · Answer

ultraviolet waves have the highest frequency

anonymous · Answer

ohh so they are the shortest then?

michele_laino · Answer

yes! the ultraviolet radiation are the shortest, sorry for my previous wrong answer

michele_laino · Answer

radiations*

anonymous · Answer

oh! you were correct!! the question asked for longest! so that means radio waves right? :P

anonymous · Answer

oh i saw your other comment! :P thank you!!