Question

Q.What is heisenbergs uncertainty principle?

Answer 1

It is impossible to accurately determine both the position and the momentum of a microscopic particles simultaneously.
This is heisenbergs uncertainty principle.

Answer 2

Heisenberg Uncertainty Principle

It states that it is impossible to measure position and momentum of any microscopic particle accurately at any instant of time.

∆x . ∆p ≥ $\bf{\frac{h}{4π}}$

OR

∆x . m . ∆v ≥ $\bf{\frac{h}{4π}}$

Where

∆x = uncertainty in position

∆p = uncertainty in momentum

∆v = uncertainty in velocity

m = mass

h = plank's constant

Explaination for Heisenberg Uncertainty Principle

To measure position and momentum of any microscopic particle , we have to first able to see it so that we can observe it , for which some light is allowed to fall on it , bu due to the hitting nature of light , the position, the momentum of microscopic particle will change. Hence , they can't be measured accurately.