Atomic Structure Result Question 22-1

22. The wavelength associated with a golf ball weighing $200 \mathrm{~g}$ and moving at a speed of $5 \mathrm{~m} / \mathrm{h}$ is of the order

(2001,1 M)

(a) $10^{10} \mathrm{~m}$

(b) $10^{20} \mathrm{~m}$

(c) $10^{30} \mathrm{~m}$

(d) $10^{40} \mathrm{~m}$

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Answer:

Correct Answer: 22. ( c )

Solution:

  1. Using the de-Broglie’s relationship :

$\lambda=\frac{h}{m \nu}=\frac{6.625 \times 10^{-34}}{0.2 \times \frac{5}{60 \times 60}}=2.3 \times 10^{-30} \mathrm{~m}$