Wave Optics

Question

The de-Broglie wavelength of an electron in the first Bohr orbit is
  • equal to the circumference of the first orbit.
  • equal to twice the circumference of the first orbit.
  • equal to half the circumference of the first orbit.
  • equal to one-fourth the circumference of two first orbit.

Answer

A.

equal to the circumference of the first orbit.

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