Which of the following rules states that it is impossible to determine simultaneously the exact position and exact momentum of an electron?

Which two developments remove the drawbacks of Bohr's model?

The uncertainty in position is $10^{-10} \ m$ and in velocity is $5.27 \times 10^{-24} \ m \ s^{-1}$. Calculate the mass of the particle.

An accelerated electron has a speed of $5 \times 10^{6} \ m \ s^{-1}$ with an uncertainty of $0.02 \ \%$. The uncertainty in finding its location while in motion is $x \times 10^{-9} \ m$. The value of $x$ is $......$ (Nearest integer)
[Use mass of electron $= 9.1 \times 10^{-31} \ kg, h = 6.63 \times 10^{-34} \ J \ s, \pi = 3.14]$

If uncertainty in position and momentum of an electron are equal,then uncertainty in its velocity is

Give the difference between $\psi$ and $|\psi|^2$.