Question

Which type of wave does not require a medium to travel through?

A.
wave created by x-rays as they create an image of a bone

B.
wave created by plucking the strings of a guitar

C.
wave created by dropping a pebble in water

D.
wave created by squeezing and releasing a spring

Answer 1

hmm mechanical waves need medium to trave
while elecromagnetic dont need any medium
sound and water waves need medium they are mechanical waves
while x-rays dont as they are electromagnetic
so A as its pointing toward x-rays
but B D towards sound waves and c towards water waves