Question

The uncertainity in position of an electron is
equal to its de-broglie wave length. The
minimum percentage error in its
measurement of velocity under this
circumstance will be approximately
(A) 4
(B) 8
(C) 22
(D) 18​

Answer 1

Answer:

Hi friend

Hope this answer helps you

The answer is 8

Explanation:

According to question, uncertainty in position is equal to De broglie wavelength,

therefore dx=

mv

h

Now, according to uncertainity principle, dx.dp=

4π

h

as minimum is required.

So, mdv.dx=

4π

h

.

By putting the value of dx from above, we get

v

dv

=

4π

1

.

So % error =

v

dv

×100=

4π

100

=8

Answer 2

Explanation:

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