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What is the de – Broglie wavelength of a ball of mass 150 g moving at a speed of 50 m/s?(a) 8.8 × 10^-34m(b) 8.8 × 10^-30m(c) 8.8 × 10^-25m(d) 8.8 × 10^-35mThis question was addressed to me by my college professor while I was bunking the class.My question is from Wave Nature of Matter topic in section Dual Nature of Radiation and Matter of Physics – Class 12

Answer»

Right CHOICE is (d) 8.8 × 10^-35m

Easiest explanation: Given: m = 150 g; v = 50 m/s

The required equation ➔ λ=\(\FRAC {H}{p} = \frac {h}{MV}\)

λ=\(\frac {6.6 \TIMES 10^{-34}}{150 \times 10^{-3} \times 50}\)

λ=8.8 × 10^-35m



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