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KCET2007ChemistryStructure of Atom

A body of mass 10 mg is moving with a velocity of 100 ~ms ⁻¹ . The wavelength of de-Broglie wave associated with it would be ( h=6.63 10⁻³⁴ Js )

Options

  1. A6.63 10⁻³⁵ ~m
  2. B6.63 10⁻³⁴ ~m
  3. C6.63 10⁻³¹ ~m
  4. D6.63 10⁻³⁷ ~m

Correct answer

C. 6.63 10⁻³¹ ~m

Step-by-step solution

m=10 mg =10 10⁻⁶ ~kg aligned v &=100 ~ms ⁻¹ &= h m v = 6.63 10⁻³⁴ 10 10⁻⁶ 100 &=6.63 10⁻³¹ ~m aligned

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