Question

THE SMALLEST UNIT ON THE SLEEVE OF A MICROMETER SCREW GAUGE IS 0.5MM. THERE ARE 50 DIVISIONS ON THE THIMBLE ON THIS SCREW GAUGE.WHAT IS THE SMALLEST LENGTH THAT CAN BE MEASURED WITH THIS INSTRUMENT

Answer 1

Answer:

Pitch of the circular scale P=0.5 mm

Number of divisions on circular scale N=50

So least count of screw gauge L.C =

NP= 50

0.5

mm=0.01 mm

Now, main scale reading is given as M.S.R =2 mm

Marking on circular scale n=25

Thus, diameter of sphere d=M.S.R+n×L.C

⟹ d=2 mm+25×0.01 mm=2.25 mm

Answer 2

The smallest unit on the sleeve of a micrometer screw gauge is 0.5mm. There are 50 divisions on the thimble of this screw gauge. What is the smallest length that can be measured with this instrument?

ALL your questions are a crib for your homework. Do the maths yourself.

BTW most micrometers have a Vernier scale so they can measure 0.001mm, which is NOT the answer you need.

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