## Question

The distance of the closest approach of an alpha particle fired at a nucleus with kinetic energy *K* is *r _{0}*. The distance of the closest approach when the alpha particle is fired at the same nucleus with kinetic energy 2

*K*will be

### Solution

The distance of the closest approach is given by

.

When *K* is doubled, *r _{0}* becomes half.

#### SIMILAR QUESTIONS

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*p*will be

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