COMEDK-UGET SERIES Physics
Atoms
9 previous year questions.
Volume: 9 Ques
Yield: Medium
High-Yield Trend
1
2015 2
2012 2
2010 2
2008 2
2006 Chapter Questions 9 MCQs
01
PYQ 2006
medium
physics ID: comedk-u
In Sommerfeld's atomic model, corres ponding to principal quantum number , there will be
1
3 elliptical orbits
2
3 circular or-bits
3
1 circular and 2 elliptical orbits
4
1 elliptical and 2 circular orbits
02
PYQ 2006
easy
physics ID: comedk-u
The most stable particle in Baryon group is
1
neutron
2
omega - particle
3
proton
4
lamda - particle
03
PYQ 2008
hard
physics ID: comedk-u
Angular momentum of an electron in an orbit of H atom is proportional to
1
2
3
4
04
PYQ 2008
medium
physics ID: comedk-u
Fine structure of spectral lines is accounted in Sommerfeld atom model by considering
1
elliptical orbits around the nucleus
2
relativistic change in mass of electron in elliptical orbits
3
spin of the electron
4
space quantisation of orbits
05
PYQ 2010
medium
physics ID: comedk-u
Angular frequency of an electron in Bohr atom with quantum number n is proportional to
1
2
3
4
06
PYQ 2010
medium
physics ID: comedk-u
Excited H atom emits a photon of energy , orbital angular momentum of electron changes by
1
2
3
4
07
PYQ 2012
medium
physics ID: comedk-u
"Plum pudding" model of an atom was proposed by
1
C.V. Raman
2
N . Bohr
3
E . Rutherford
4
J.J. Thomson.
08
PYQ 2012
medium
physics ID: comedk-u
In the case of the Bohr atom model, if and are the kinetic and potential energies of an electron in an orbit then,
1
2
3
4
09
PYQ 2015
medium
physics ID: comedk-u
The shortest wavelengths of Paschen, Balmer and Lyman series are in the ratio
1
2
3
4