Ans : X-rays having short wavelength and high penetrating ability are very destructive, this is why they are known as hard X-Rays.
The uses of X rays in medicinal fields have less penetrating power and longer wavelengths and hence they are called soft X-Rays. X ray waves possess a dual nature.
- The wavelength of the electromagnetic spectrum of X-Rays are short.
- X-rays require high voltage to produce.
- X-rays are used to detect the defects of the human skeleton.
- X-rays always travel in a straight line and they do not carry any electric charge with them.
- And also the X-rays are capable of travelling in a vacuum.