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NEET2008PhysicsDual Nature of MatterActual

A particle of mass 1 mg has the same wavelength as an electron moving with a velocity of 3 10^6 ~ms ⁻¹ . The velocity of the particle is (mass of electron =9.1 10⁻³¹ ~kg )

Options

  1. A2.7 10⁻²¹ ~ms ⁻¹
  2. B2.7 10⁻¹⁸ ~ms ⁻¹
  3. C9 10⁻² ~ms ⁻¹
  4. D3 10⁻³¹ ~ms ⁻¹

Correct answer

B. 2.7 10⁻¹⁸ ~ms ⁻¹

Step-by-step solution

Same momentum of both particles aligned & 1 10⁻³ v=9 10⁻³¹ 3 10^6 & v=2.7 10⁻¹⁸ ~m / s aligned

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