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PhysicsNEET 2019Matter waves and de Broglie wavelength

Dual Nature of Radiation and Matter

An electron is accelerated through a potential difference of 10,000 V. Its de Broglie wavelength is, nearly: (me=9×10−31m_e = 9 \times 10^{-31} kg)

  1. A.12.2×10−1312.2 \times 10^{-13} m
  2. B.12.2×10−1212.2 \times 10^{-12} m✓
  3. C.12.2×10−1412.2 \times 10^{-14} m
  4. D.12.2 nm

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