Questions
Uncertainty in position of an electron (mass = 9.1 x 10-28 g) moving with a velocity of 3 x 104 cm/s accurate upto 0.001% will be (use h/4 in uncertainty expression where h = 6.626 xl0-27 erg-second).
detailed solution
Correct option is A
Given mass of an electron(m) = 9.1 x l0-28 g'
Velocity of electron (v) = 3 x lO4cm/s;
Accuracy in velocity = 0.00l% = ;
Actual velocity of the electron
Planck's constant (h) = 6.626x10-27 erg-sec.
Uncertainty in the position of the electron
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