SATHEE: Atomic Structure Question 505

Atomic Structure Question 505

Question: The uncertainty in momentum of an electron is $1 \times 10^{- 5} k g - m / s$ . The uncertainty in its position will be ( $h = 6.62 \times 10^{- 34} k g - m^{2} / s$ ) [AFMC 1998; CBSE PMT 1999; JIPMER 2002]

Options:

A) $1.05 \times 10^{- 28} m$

B) $1.05 \times 10^{- 26} m$

C) $5.27 \times 10^{- 30} m$

D) $5.25 \times 10^{- 28} m$

Show Answer

Answer:

Correct Answer: C

Solution:

According to $Δ x, \times Δ p = \frac{h}{4 π}$

$Δ x = \frac{h}{Δ p \times 4 π} = \frac{6.62 \times 10^{- 34}}{1 \times 10^{- 5} \times 4 \times 3.14}$

$= 5.27 \times 10^{- 30} m$ .

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Atomic Structure Question 505

Question: The uncertainty in momentum of an electron is 1×10−5kg−m/s . The uncertainty in its position will be ( h=6.62×10−34kg−m2/s ) [AFMC 1998; CBSE PMT 1999; JIPMER 2002]

Options:

Answer:

Solution:

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Question: The uncertainty in momentum of an electron is $1 \times 10^{- 5} k g - m / s$ . The uncertainty in its position will be ( $h = 6.62 \times 10^{- 34} k g - m^{2} / s$ ) [AFMC 1998; CBSE PMT 1999; JIPMER 2002]