Lessons

Eamcet Chemistry
1st year :unit2.2(Atomic Structure)-De-Broglie Wave Theory

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Q.

If the kinetic energy of an electron is 4.55 × 10-25J, find its wavelength (Planck’s constant,
h = 6.625 × 10-34 kgm2 s-1, m = 9.1 × 10-31 kg).

View Answer

Correct choice: C

Explanation:

KE of electron, 1/2mv2 = 4.55 × 10-25 J.
Mass of electron, m = 9.1 × 10-31 kg
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