Question

The uncertainty for the calculation of radius of the first Bohr
orbit is 2% for the hydrogen atom. What will be the uncer-
tainty in velocity of electron in the first Bohr orbit. (Given that
h=6.626 x 10-34 Js and m= 9.1 x 10-31 kg.)
1
(a) 5.47x107 ms
(b) 6.02 x107 ms-
(c) 4.71x10 m 5-1 (d) 6.85 x107 ms-​

Answer 1

Answer:

Calculate the radius of second Bohr orbit in hydrogen atom from the given data.

Mass of electron= 9.1×10

−31

Kg

Charge on the electron=1.6×10

−19

C

Planck's constant=6.63×10

−34

J−s

Permitivitty of free space = 8.85×10

−12

C

2

/Nm

2