# QUESTIONS on Heisenberg uncertainty principle 1

Determine the Heisenberg uncertainty in the

**Energy of photon which is radiated in time interval of 10**^{-5}s**Momentum of 0.2kg football moving with a speed of 20ms-1 and restricted to a region of 25cm****Determine the fractional uncertainty in momentum too.**

Solution

(1) using

(2) using

(3) Using

# QUESTIONS on Heisenberg uncertainty principle 2

(4) The Heisenberg uncertainty principle can be wrtten as

I)

II)

III)

ANSWERS are **I and III**

# QUESTIONS on Heisenberg uncertainty principle 5

**A 0.01kg of football moving with a speed of 20ms ^{-1} is restricted to a region of 20cm. calculate:**

**I) the uncertainty in momentum**

**II) the fractional uncertainty in momentum**

Solution

I) using

II) using

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