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Standard IX

Physics

Measuring Length

The least cou...

Question

The least count of the main scale of a screw gauge is $1 m m$ .The minimum number of division on its circular scale required to measure $5 μ m$ diameter of wire is:

50

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100

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200

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500

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Solution

The correct option is C $200$

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Similar questions

Q. Two full terms of the circular scale of a screw gauge cover a distance of

1 m m

on its main scale. The total number of divisions on the circular scale is

50

. Further, it is found that the screw gauge has a zero error of

- 0.03 m m

. While measuring the diameter of a thin wire, a student notes the main scale reading of

3 m m

and the number of circular scale divisions in line with the main scale as

35

. The diameter of the wire is

The pitch of a screw gauge is 1 mm and its circular scale has 100 divisions. In measurement of the diameter of a wire, the main scale reads 2 mm and 45th mark on circular scale coincides with the base line. Find :

(i) the least count, and

(ii) the diameter of the wire.

Q. Two full turns of the circular scale of a screw gauge cover a distance of 1 mm on its main scale. The total number of divisions on the circular scale is 50. Further, it is found that the screw gauge has a zero error of -0.03 mm while measuring the diameter of a thin wire, a student notes the main scale reading of 3 mm and the number of circular scale divisions in line with the main scale as 35. The diameter of the wire is:

Q. A screw gauge gives the following reading for measuring the diameter of a wire.
Main scale reading :

0 mm

Circular scale reading :

60

divisions
Given, that

1 mm

on main scale corresponds to

100

divisions on circular scale. The diameter of wire is,

Q. The pitch of a screw gauge is

1

mm and its circular scale has

100

divisions. In measurements of the diameter of a wire, the main scale reads

2

mm and

45

th mark on circular scale coincides with the baseline. Find the least count ?

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The least count of the main scale of a screw gauge is 1mm.The minimum number of division on its circular scale required to measure 5μm diameter of wire is:

The correct option is C 200

The least count of the main scale of a screw gauge is $1 m m$ .The minimum number of division on its circular scale required to measure $5 μ m$ diameter of wire is:

The correct option is C $200$