-rays of energy 2.9 × 104 eV are scattered by a free stationary electron through an angle of 135°. What is the energy of the scattered X-rays, in electron volts?
(mel = 9.11 × 10-31 kg,
e = - 1.60 × 10-19 C, h = 6.626 × 10-34 J ? s, c = 3.00 × 108 m/s, 1 eV = 1.60 × 10-19 J)
What will be an ideal response?
Answer: 2.6 × 104 eV
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