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  4. The figure represents the observed intensity of X -rays emitted by an X -ray tube as a function of wavelength. The sharp peaks A and B denote

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Q. The figure represents the observed intensity of $X$ -rays emitted by an $X$ -ray tube as a function of wavelength. The sharp peaks $A$ and $B$ denotePhysics Question Image

Dual Nature of Radiation and Matter

Solution:

In $X$ -ray spectra, depending on the accelerating voltage and the target element, we may find sharp peaks super imposed on continuous spectrum. These are at different wavelengths for different elements. They form characteristic $X$ -ray spectrum.