MDCAT Physics MCQ #2857

If a neutron moderator slows neutrons from 2 MeV to 0.025 eV, what is the ratio of their kinetic energies before and after?

MDCAT Physics MCQ #2857

  1. Question 1

    Q1. If a neutron moderator slows neutrons from 2 MeV to 0.025 eV, what is the ratio of their kinetic energies before and after?

    • A) 80000:1
    • B) 1:80000
    • C) 1000:1
    • D) 1:1000

    Answer: 80000:1

    Explanation: Energy ratio = 2 × 10⁶ eV / 0.025 eV = 80,000. Option C ignores the correct unit conversion.