The probability that a particle is in a given small region of space is proportional to ?
Answer: The square of the magnitude of its wave function
Explanation
In quantum mechanics, the wave function ψ(x,t) describes the quantum state of a particle.
The probability density of finding the particle at a particular position in space is given by:
P(x)=∣ψ(x,t)∣^2
This means:
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The square of the magnitude (or absolute value) of the wave function gives the probability per unit length (or volume) of finding the particle in that region.
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This principle is known as the Born interpretation.
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