Question:

The curves \( P \) and \( Q \) schematically show the variation of X-ray intensity with wavelength at two different accelerating voltages for a given target material. In the figure, \( \lambda_1 = 0.25 \) Å, \( \lambda_2 = 0.5 \) Å, \( \lambda_3 = 1.0 \) Å, and \( \lambda_4 = 2.25 \) Å. Take Planck's constant as \( 6.6 \times 10^{-34} \) Js, the speed of light as \( 3 \times 10^8 \) m/s, and the elementary charge as \( 1.6 \times 10^{-19} \) C.

Which of the following statement is/are true?

Updated On: Jul 12, 2024
  • The accelerating potential corresponding to curve P is greater than that of curve Q
  • The accelerating potential applied to obtain curve Q is 24750 V
  • Peaks (II) and (IV) correspond to radiative transitions from L to K shells
  • Peaks (I) and (III) correspond to radiative transitions from N to K shells
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The Correct Option is A, B, C

Solution and Explanation

The correct Answers are (A) :The accelerating potential corresponding to curve P is greater than that of curve Q(,B):The accelerating potential applied to obtain curve Q is 24750 V,(C):Peaks (II) and (IV) correspond to radiative transitions from L to K shells
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