Question

An electron has a speed of 40ms power inverse accurate upto 99.99% what is the uncertainity in its location

Answer 1

Explanation:

Mass of electron = 9.1 X 10-31 kg.

uncertainty in position = Planck’s constant / 4 * pi * mass * uncertainty in velocity.

Planck's constant(h)=6.63 x 10^-34 Joule *S

So, uncertainty =6.63x10^-34/4x3.14x9.1x10^-31x 40x0.9999

=6.63x10^-65/4x3.14x9.1x39.996

=0.001450327x10^-6

5=1.45x10^-68

Answer 2

Explanation:

Given that Δv = (0.01/100)×40

= 0.004ms-¹

we know , Δx.Δv >_ h /4πm

Δx >_ = h/4πmΔv

Δx = (6.625 × 10^-34)/4×3.14×9.1×10^-31×0.004

Δx = 1.45 × 10-²m