JEE Main2006ChemistryStructure of AtomActual
Uncertainty in the position of an electron (mass =9.1 10⁻³¹ ~kg ) moving with a velocity 300 ~ms ⁻¹ , accurate upto 0.001 % , will be
Options
- A19.2 10⁻² ~m
- B5.76 10⁻² ~m
- C1.92 10⁻² ~m
- D3.84 10⁻² ~m (h .=6.63 10⁻³⁴ Js )
Correct answer
C. 1.92 10⁻² ~m
Step-by-step solution
aligned & x . V h 4 m & x h 4 m V = 6.63 10⁻³⁴ 4 3.14 9.1 10⁻³¹ 300 0.001 100 &= 6.63 10⁻³⁴ 4 3.14 9.1 3 10⁻³¹ 10⁻³ &=0.01933 &=1.93 10⁻² aligned