Question

An electron has a speed of 40 ms-1

accurate upto 99.99%. What is the

uncertainty in locating its position (m = 9.1 × 10-31kg, h = 6.6 × 10-34 Js)?​

Answer 1

Answer:

From Heisenberg uncertainty principle,

Δx×Δp=  

4π

h

​  

 

Δx=  

4π×mΔv

h

​  

 

where,  

Δv=40×0.0001

m=9.1×10  

−

31 Kg

h=6.63×10  

−34

 J.sec

Δx=0.0144 m  

Hence, option A is correct.

Explanation: