Question

if is uncertainty of position electron and proton are equal then the ratio between uncertainty in velocity is....

Answer 1

according to Heisenberg uncertainty principle :-
∆v × ∆x ≥ h/4πm

where ∆x is uncertainty in position and ∆v is uncertainty in velocity.
according to question,
∆x for both e and P are same
so, ∆x = constant

hence ,
∆v inversely proportional to mass of its

now,
ratio of uncertainty of velocity = mass of proton /mass of elelctron
= 1.6726× 10^-27/9.1×10^-31
= 1.6726/9.1 × 10⁴

=0.1838×10⁴