Question

Compared to the uncertainty associated with 1kg iron ball, the uncertainty of electron is:
(Assume both are moving in the same speed)

• A. 10 times
• B. ${10}^2$ times
• C. ${10}^{23}$ times
• D. ${10}^{30}$ times

Answer 1

The correct option is D ${10}^{30}$ times

The mass of the body can be taken as a measure of uncertainty.
Lower the mass, higher the uncertainty and higher the mass, lower the uncertainty
i.e. $Uncertainty\propto \frac{1}{m}$.
The mass of electron $=9.10938356\times {10}^{-31}$ kilograms.
So, ratio will be ${10}^{30}$(Approx)