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STD 12 - 12. atoms — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - 12. atoms4 Marks
MCQ
An electron collides with an atom in its ground state at rest. The atom then emits a photon of energy $E_{photon}$ . In this process the change $\Delta E_{elec}$ in the electron's energy is
  • ✓
    Greater than $E_{photon}$
  • B
    Greater than or equal to $E_{photon}$
  • C
    Equal to $E_{photon}$
  • D
    Less than or equal to $E_{photon}$
✓

Answer

Correct option: A.
Greater than $E_{photon}$
a
$K_i = K_f + E_{photon} + K_{atom}$

$K_i - K_f = E_{photon} + K_{atom}$

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