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Q2

Expert-verified
Found in: Page 1136

### Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

Book edition 4th
Author(s) Randall D. Knight
Pages 1240 pages
ISBN 9780133942651

# What is the difference between the probability and the probability density?

Probability is a number defining chances of and event to occur whereas probability density is distribution of probability over a region in space.

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## Concept Used

Difference between probability and probability density is same as difference between charge and charge density.

## Explanation

Probability: Chances of occurrence of an event is defined as Probability.

More is the likeliness of an even to happen, higher is it's probability.

Probability density is more of a distribution term. If probability of something is distributed over a length or region then probability density comes into play.

For example: Finding and electron in the region x=1 to x=5 will have different probability densities throughout this region.