Question

The given graph represents the observed intensity (I) of the X-rays emitted by an X-ray tube as function of wavelength ($\lambda$). The sharp peaks A and B denote:

• A. band spectrum
• B. continuous spectrum
• C. white radiation
• D. characteristic spectrum

Answer 1

The correct option is D characteristic spectrum

The sharp peak A and B denotes characteristic X-ray spectrum.

At other wavelengths the intensity varies gradually so that no definite line of separation can be drawn between any two of them. These X-rays are called continuous X-rays.