Ans question no 16 certain metal when irradiated With light
1016 Hz) emits photo electrons With
32
kinetic energy as did photo electron S
tne same metal is irradiated by light
. s 2.0 1016 Hz), Calculate vo of electro ?
8 1015 H 0 _v
(4) 4 x 1012 Hz
- —313.6/n2 kcal/mole. If the varue'
_34_84 kcal/mole, to which value does 'n'
Which transition of Lii+ is associated with same
energy change as n = 6 to n = 4 transition in
25.
(I) n: 3 ton—I
(2) n = 8 to n = 6
Zeeman effect refers to the
(1) Splitting of the spectral lines in a magnetic
field
(2) Splitting up of the spectral lines in an
electrostatic field
(3) Emission of electrons from metals when light
falls on it
(4) Random scattering of a-particles by gold foil
1018
is . *rnber of spectral lines in Balmer series when an
electron return from 7th orbit to ISt orbit of
hydrogen atom are
(4) 15
with it would become
26.
27
.1 Its
9 If kinetic energy of a proton is increased nine
times, the wavelength Of the de-Broglie wave