The kinetic energy and potential energy of a particle executing simple harmonic motion will be equal, when displacement (amplitude = $a$) is
  • A$\frac{a}{2}$
  • B$a\sqrt 2 $
  • C$\frac{a}{{\sqrt 2 }}$
  • D$\frac{{a\sqrt 2 }}{3}$
JEE MAIN 2021, Medium
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