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BITSAT2021ChemistryStructure of AtomActual

Calculate the wavelength (in nanometer) associated with a proton moving at 1.0 10³ ~ms ⁻¹ . (Mass of proton =1.67 10⁻²⁷ ~kg and . h =6.63 10⁻³⁴ Js )

Options

  1. A0.40 ~nm
  2. B2.5 ~nm
  3. C14.0 ~nm
  4. D0.32 ~nm

Correct answer

A. 0.40 ~nm

Step-by-step solution

aligned &= h m v = 6.63 10⁻³⁴ 1.67 10⁻²⁷ 1 10³ &=3.97 10⁻¹⁰ meter =0.397 nanometer 0.40 ~nm aligned

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