The circular scale of a screw gauge has 50 divisions and pitch of...

The circular scale of a screw gauge has 50 divisions and pitch of

0.5 \mathrm{~mm}

. Find the diameter of sphere. Main scale reading is 2 . The circular scale of a screw gauge has 50 divisions and pitch of 0.5 ~mm . Find the diameter of sphere. Main scale

The circular scale of a screw gauge has 50 divisions and pitch of 0.5 ~mm . Find the diameter of sphere. Main scale

Options

A $1.2$
B $1.25$
C $2.20$
D $2.25$

Correct answer

A. $1.2$

Step-by-step solution

Least count

\mathrm{LC}=\frac{\text{ Pitch }}{\text{ Number of divisions on circular scale }}=\frac{0.1}{50} =0.01

\mathrm{~mm}

Now, diameter of ball

=(2 \times 0.5

\mathrm{~mm}

)+(25-5)(0.01)=1.2

\mathrm{~mm}

Practice Experimental Physics on Quantrex Academy →

More from Experimental Physics

Two thin wires, Wire-1 of diameter 0.650 mm and Wire-2 of unknown diameter d are given.… JEE Advanced 2026 In a Vernier calipers, when both jaws touch each other, zero of the Vernier scale is… JEE Main 2026 In a screw gauge when the circular scale is given five complete rotations it moves… JEE Main 2026 In a screw gauge the zero of main scale reference line coincides with the fifth division… JEE Main 2026 In an experiment, a set of reading are obtained as follows - 1.24 ~mm, 1.25 ~mm, 1.23 ~mm… JEE Main 2026 When both jaws of vernier callipers touch each other, zero mark of the vernier scale is… JEE Main 2026 In a vernier callipers, 50 vernier scale divisions are equal to 48 main scale divisions.… JEE Main 2026 In a screw gauge, the zero of the circular scale lies 3 divisions above the horizontal… JEE Main 2026 Full Experimental Physics list All JEE Advanced PYQs