A particle of mass 5 mg moves with a speed of 8 m/s. Calculate its de Broglie wavelength (h = 6.63 x 10^-34 J s).
Correct answer: C. 1.66 x 10^-29 m
- A. 0.71 x 10^-29 m
- B. 1.66 x 10^29 m
- C. 1.66 x 10^-29 m
- D. 3.77 x 10^-29 m
- E. 5.71 x 10^-29 m
Explanation
The correct de Broglie wavelength is calculated using the formula λ = h/(mv). The mass of the particle is given as 5 mg, which is converted to 5 x 10-6 kg. The speed is 8 m/s, and Planck's constant h is 6.63 x 10-34 J s. Plug these values into the formula:λ = 6.63 x 10-34 / (5 x 10-6 kg x 8 m/s) = 1.66 x 10-29 m.
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