Question

1. To find average distance between the legs
a
a,
cm,
(a, +a, +a)__ cm.
3
31
cm,
cm,
II. To find the L.C. of spherometer
1. Value of one division on the main scale, S =0.0__cm.
2. Number of divisions on the circular scale, N= 100
3. Distance through which the screw advances on the main scale in n rotations of the circular
scale =D=
cm.
4. n = number of rotations given to the circular scale =
D
5. Pitch of the screw = P =
cm
1
n
01 - 0.001
cm.
P
6. Least Count of spherometer
N
Surface Obs. Main scale Coincident
no. reading divisions on
A (cm) circular scale B
Plane 1
Mirror
2
Circular scale
reading (cm)
C=(B+L.C.)
0.050
F
Total read- Mean
ing =A+C reading
(cm) (cm)
10.050 X=
0.054
0.213
Y=
10 214
0.215
00$ 2
1
Convex
surface
02
0.013
0.015
2
III. To find sagitta (h):
Sagitta of the spherical surface = h=1 X-Y)
0.162 cm




R=a2/6h + h/2 find this using log and antilog

a=3.06 , h =0.162

it's urgent plz ans ​

Answer 1

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