Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The position of both, an electron and a helium atom are known within 1.0 nm. Further the momentum of the electron is known within 
kg 
. The minimum uncertainty in the measurement of the momentum of the helium atom is
A
8. 
kg 
kg
B
80 kg 
C
50 kg 
D
5. 
kg 
kg
Text Solution
Verified by ExpertsThe correct answer is:
D
According to uncertainty principle the product of uncertainty in position and uncertainty in momentum is constant for a particle.
i . e ., 
As, 
nm for both electron and helium atom, so 
is also same for both the particles.
Thus, uncertainty in momentum of the helium atom is also 
kg 
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