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5.work,energy,power and collision — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics5.work,energy,power and collision1 Mark
MCQ
Four particles given, have same momentum which has maximum kinetic energy
  • A
    Proton
  • ✓
    Electron
  • C
    Deutron
  • D
    $\alpha $-particles
✓

Answer

Correct option: B.
Electron
b
(b)$E = \frac{{{P^2}}}{{2m}}$

   $E \propto \frac{1}{m}$ (If $P =$ constant)
i.e. the lightest particle will possess maximum kinetic energy and in the given option mass of electron is minimum.

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