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**Answer the following question, which help you understand the difference between Thomson’s model and Rutherford’s model better.**

In which model is it completely wrong to ignore multiple scattering for the calculation of average angle of scattering of α-particles by a thin foil?

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#### Solution

Thomson’s model

It is wrong to ignore multiple scattering in Thomson’s model for the calculation of the average angle of scattering of α−particles by a thin foil. This is because a single collision causes a very little deflection in this model. Hence, the observed average scattering angle can be explained only by considering multiple scattering.

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