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Question

The fig. 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:

20793_952d552a861c44699ef0dbda3fcde0d1.png

A
band spectrum
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B
continuous spectrum
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C
characteristic spectrum
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D
white radiation
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Solution

The correct option is C characteristic spectrum
In X-ray spectra, depending on the voltage and element, we may find several peaks on the continuous spectrum. These are at different wavelengths for different elements . They form characteristic X - ray spectrum. Sharp peaks A & B denote characteristics X-rays.

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