Q50 / 69 · JEE Advanced 2008 (Paper 1) · Physics

Which one of the following statement is WRONG in the context of X-rays generated from X-ray tube?

  • A
    Wavelength of characteristic X-rays decreases when the atomic number of the target increases
  • Correct answer
    B
    Cut-off wavelength of the continuous X-rays depends on the atomic number of the target
  • C
    Intensity of the characteristics X-rays depends on the electrical power given to the X-ray tube
  • D
    Cut-off wavelength of the continuous X-rays depends on the energy of the electrons in the X-ray tube

Solution

Cut-off wavelength depends on the applied voltage not on the atomic number of the target. Characteristic wavelengths depend on the atomic number of target.

Hence, the correct answer is option: 'B'.

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