Question36:-A charged particle is moving in a helical path under the influence of a constant magnetic field. The initial
velocity of the particle is such that the component along the magnetic field is twice the component in the plane nomal to
the magnetic field. What will be the ratio of the pitch to the radius of the helical path 7

கற

0:-4 0
Correct Answer:- Option-D

Question37:-A square wire loop carries a steady current 1. Let R be the shortest distance from the centre to the side. What
will be the magnetic field at the centre of the square loop 7

கபடு
“ப 006
னைப்‌
D:-" (mu_{ON}/(sqrt(2)piR)
Correct Answer:- Option-C
Question38:-The magnetic field at a distance R from a straight wire camrying a steady current | is proportional to
ಹಿಗ್ಗಾ
8:8
ப்ட்‌
2-௩
Correct Answer:- Option-A
hich of the following thermodynamic relation is comect 7
7653 80%
⋅ ⊤∢↿⋮⋅⊧∢↿∨
6:00 2705+ 68
D:-U=TdS-GdP
Correct Answer:- Option-B
Question40:-Which mode of electromagnetic radiation cannot propagate through a rectangular waveguide 7
ಹ್‌
B:-TM
C:-TEM
D:-All the above
Correct Answer:- Option-C
hich is the least symmetric crystal system 7

C:-orthorhombic
D:-monoclinic
Correct Answer:- Option-B
Question42:-The amount of split in an energy level in the case of anomalous Zeeman effect due a magnetic field B, from

non field level (where *mu_{B}" is the Bohr magnetron, *m_{j}’ is the magnetic total angular momentum quantum number
and g is the Lande g factor) is given by
A (gm_(i)/(mu_(B))B"
B:-*{gmu_(B))/(m_(i)B"
@-9 7५ (8) 87
0:- (ग) (7१५. (8))9)8-
Correct Answer:- Option-C
Question43:-The substances, which are expected to show electron spin resonance spectroscopy, are
A:-paramagentic
B:-diamagnetic
C:-ferromagnetic
D:-none of these
Correct Answer:- Option-A

Question44:-The selection rule goveming the transition between different energy levels in pure rotational Raman spectra, in
terms of rotational quantum number), is

भ ` +- 1) 00
+-1" only
or’+-2" only
D:-A) = ` +- 2 0४
Correct Answer:- Option-C