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Wave Optics

Question

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What is the impact parameter for scattering of α-particle by 180°?

Solution

The formula for impact parameter is ,

Impact parameter, b = \frac{{Ze}^{2} \cot \frac{θ}{2}}{4 {πε}_{0} (\frac{1}{2} {mv}^{2})}

We will have cot 90^o= 0.
Therefore,
Impact parameter is zero.

Some More Questions From Wave Optics Chapter

A classical atom based on __________ is doomed to collapse. (Thomson's model/Rutherford's model)

An atom has a nearly continuous mass distribution in a ___ but has a highly non-uniform mass distribution in (Thomson's model/Rutherford's model)

The positively charged part of the atom possesses most of the mass in ___________ (Rutherford's model/both the models).

Suppose you are given a chance to repeat the alpha-particle scattering experiment using a thin sheet of solid hydrogen in place of the gold foil. (Hydrogen is a solid at temperatures below 14 K.) What results do you expect?

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