If the zeroth division of the head scale is above the index line ,the error is said to be
Negative
Positive
Neutral
None of these
The value of Least count ,L.C =
1mm
0.001 cm
0.01 cm
In screw gauge the barrel is tapered and has 100 or 50 equal divisions on it. This is called the
Pitch scale
Ordinary scale
Head scale
Least count
Pitch of the screw is 1 mm. Head scale has 100 divisions. Give the Least Count.
0.0001 m
1 m
0.00001 m
.001 m
When the zero division of Head Scale is above the index line, the error and correction are :
-ve,+ve
+ve,-ve
+ve, +ve
-ve, -ve
The reference or index line can be divided into some convenient units or divisions and it is called
When a screw gauge of Least count 0.01 mm is used to measure the diameter of a nail, the P.S.R. is found to be 1.5 mm, and H.S.R is 18. Find the diameter of the nail ?
0.0168 mm
16.8 mm
0.168 mm
1.68 mm
In screw guage, the index line is divided into some equal divisions. This serves as the
Distance between two adjacent threads on a screw gauge is
Least Count
Main Scale Reading
Pitch
Head Scale Reading
For negative zero error, the correction and error are :
