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The product of uncertainties in particle's momentum and position.

Short Answer

Expert verified

The product of uncertainty in position and momentum is according to the uncertainty principle.

Step by Step Solution

The complete rule stipulates that the product of the uncertainties in position and velocity is Planck's constant, or about6.610-34 joule-second.

Step by step solution

01

The concept and the formula used.

The uncertainty in position isL112-12n22 .

The uncertainty in momentum is nhxL.

Formula used:

The uncertainty principle states that the position and momentum of an atom cannot be measured simultaneously. It gives uncertainty in position if we have uncertainty in momentum.

Write the expression for the uncertainty principle.

xpA2

Here, xis the change in position,p is the change in momentum and h is the reduced Planck's constant.

02

Calculating the value using the formul

Write the expression for uncertainty in position.

x=L112-12n2x2...(1)

Here,xis the uncertainty in position, L is the length and n is the number of state.

Write the expression for uncertainty in momentum.

p=n^L..(2)

Here,pis the uncertainty in momentum, n is the number of orbit and L is length.

Multiply equations (1) and (2).

xp=n112-12n22

=n2212-122

For ground state, n=1the product of uncertainties is bigger thann2, that meansxpn2which is according to the uncertainty principle for position and momentum operator.

Thus, the product of uncertainty in position and momentum is according to uncertainty principle.

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