Question

a student noted the thickness of a glass sheet using a screw gauge. on the main scale, it reads 3 division while 8th division on the circular scale coincides with index line. its thickness is: (a)3.8 cm (b)3.08 mm (c)3.8 mm (d)3.08m

Answer 1

answer

a 3.8 is the answer

hope this helps you

Answer 2

Answer:

2.57 mm

Explanation:

Main scale reading M.S.R.=2 mm

Coinciding division n=57

Least count of screw gauge L.C.=0.01 mm

Thickness of wire t=M.S.R.+n×L.C.=2+57×0.01=2.57 mm