Question

What type of wave travels faster through a gas than a solid, can be used to take images of bones, and travels at 300,000,000 m/s through space? A) microwaves B) radio C) ultrasound D) x-ray

Answer 1

I think its X-ray but at the same time I'm not sure
X-ray is used to "Take images of bones" at hospitals so I think D

Answer 2

we know that electromagnetic waves travels faster through the gas than a solid as they do not need medium to travel.

x-ray sis used in taking images of bones in medical field.

since x-ray is an electromagnetic wave , it travels at the speed of 300,000,000 m/s through space

The above mentioned characteristics belongs to x-ray. hence the correct choice is X-ray