NEET 2019 Physics question

Physics Dual Nature of Matter and Radiation NEET 2019

An electron is accelerated through a potential difference of 10,000 V. Its de Broglie wavelength is, (nearly) : ( kg)

(1) m
(2) mCorrect
(3) m
(4)12.2 nm

Answer: (2)

Solution

For an electron accelerated through a potential difference , .

λ = \ \AA = 0.1227\ \AA = 12.27× \ m ≈ 12.2× \

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Question ID VK-092387