Q)
(chatquestion)...Negative Marks : -1 In all other cases.
22. In the f
V structu
Paragraph X
In an experiment, to determine charge to mass ratio
of electron using a cylindrical diode, we use
following equations
L=0.120 ± 0.001 m,
r = (3.4± 0.1) x 10 m.
I = 1.92 ± 0.02 A and
V = 20+1 V.
15. Error occurred in magnitude of magnetic field
8V
is
(i)
%3D
p²B²
(a) 1%
(b) 2%
(c) 3%
16. Error in value of e/m of electron is
т
(d) 4%
V = potential difference across diode of
radius r
%3D
(a) 2%
(b) 4%
(c) 6%
(d) 8%
Paragraph A
A thick spherical shell of charge Q and uniform
volumetric charge density p has inner and outer radii
7 and r2, respectively. [Take, potential at infinity is
zero, also r, =r and r, = 3r].
17. Potential at a point distant 2r from centre is
(a) 15 pr2/eo
(c) 35 pr2 /eo
B= magnitude of critical magnetic field, when
electron pass undeviated.
HonI
(1+ D² / L²yU2
(ii) B=
n = number of turns per metre length of
solenoid,
(b) 25 pr2 / eo
(d) 45 pr2 /e,
C)
I = current in solenoid,
18. Potential at a point inside the shell at distance
0.5 r from centre is
D= diameter of solenoid and
L = length of solenoid.
23. V
%3D
(a) pr2 /Eo
(c) 3 pr2 /eo
(b) 2pr2 / Eo
Experimental observations are
(d) 4 pr2 / eo
n = 3920 turns in 1 m, D= 0.035± 0.001 m,...(Pls solve question 15 and 16)
...
