Which describes the motion of the object shown in this V vs T graph?

In a vernier instrument the main scale is in 1/2 mm divisions .vernier is made by redividing 19 such divisions into 20 equal parts. calculate the least count of the instrument.

Aphysical change is a change in the size, shape,, or stafe of matter true or false

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?