Old Exam Papers June 2012 (Set 2)

energy u x 2 . Find its time period of
oscillation. 3
,d d.k u x 2 foHko ÅtkZ {ks= esa xfr dj jgk gSA
d.k ds nksyudky dk eku Kkr dhft;sA 3
2. (a) Discuss about the various dynamical quantities
associated with simple harmonic motion. 6
ljy vkorZ xfr ls lEcfU/kr fofHkUu xfrd jkf'k;ksa dh
foospuk dhft;sA 6
(b) The potential energy function for a dia-atomic
molecule is defined as :
U x
a
x
bg
b
x
12 6
Find the force between the molecules.
,d f}&ijek.kqd v.kq ds fy, fLFkfrt ÅtkZ Qyu dks
fuEu :i ls O;ä fd;k x;k gS %
U x
a
x
bg
b
x
12 6
ijek.kqvksa ds e/; yxus okyk cy Kkr dhft;sA
200 2 PH-02
4
4
rjax xfr ls vki D;k le>rs gSa \ ,dleku ruh gqbZ Mksjh ds
fy, rjax lehdj.k dk gy Kkr dhft;sA 10
9. Prove that velocity of an electromagnetic wave in vacuum
is given by :
c
1
0 0
where 0 and 0 are magnetic permeability and electric
permitivity in vacuum. 10
fl) dhft;s fd fuokZr esa fo|qr pqEcdh; rjax ds osx dk
eku %
c
1
0 0
gksrk gSA ;gk¡ 0 rFkk 0 fuokZr esa pqEcdh; ikjxE;rk ,oa
fo|qr'khyrk dk eku gSA 10
10. Write short notes on the following :
(i) Electromagnetic waves
(ii) Anharmonic oscillator
5+5
PH-02 5 PTO