Question

The X-ray beam coming from an X-ray tube (a) is monochromatic

Answer 1

X-rays are a form of invisible, high-frequency electromagnetic radiation. The wavelength of x-rays is between 10 and 0.01 nanometers, corresponding to a frequency of 30 PHz to 30 EHz. X-rays are very small and energetic. They are produced by accelerating electrons at a metal target. X-rays are used in various medical applications, especially for imaging.

Answer:

Has all wavelengths greater than a certain minimum wavelength

Answer 2

The given statement is wrong as the X-ray coming from the X-ray tube has medical application especially imaging.

For imaging, the X-ray has the value greater than the minimum wavelength of a certain value and thus all the X-ray beams have all wavelength greater than the certain minimum wavelength.

This is because of the fact that the wavelength of X-ray lie between the range of 10 to 0.01 nm and is a very high-frequency electromagnetic radiation which is not visible in space.