Question

Compared to the uncertainty associated with 1kg iron ball, the uncertainty of electron is:

• A. $10$ times
• B. ${10}^3$ 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 $\propto 1/m$.
The mass of electron = 9.10938356 × 10^-31 kilograms.
So, ratio will be ${10}^{30}$.