In X-ray tube, electrons after being accelerated through velocity 'v' strike the target, then the wavelength of emitted X-rays is:
Correct answer: D. Greater than or equal to hc/eV
- A. Not greater than hc/eV
- B. . Not less than hc/eV
- C. Equal to the h/mV
- D. Greater than or equal to hc/eV
Explanation
Greater than or equal to hc/eV: This option suggests that the wavelength of emitted X-rays is at least equal to the value of hc/eV. This option is correct because the wavelength of X-rays emitted from the X-ray tube is directly related to the energy of the X-rays, which is determined by the accelerating voltage.Based on the correct understanding of X-ray emission in an X-ray tube, the correct answer is option d) Greater than or equal to hc/eV.Please note that 'h' represents Planck's constant, 'c' represents the speed of light, 'e' represents the electron charge, 'V' represents the accelerating voltage, and 'm' represents the electron mass.
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Classical physics cannot explain blackbody radiation and related observations, leading to Planck’s quantum theory, in which energy is emitted or absorbed in discrete packets. Photons provide the particle model of light, with energy and momentum linked to frequency and wavelength, including the photoelectric effect and its threshold frequency.
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