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Read the special type off vernier 20 div...

Read the special type off vernier 20 division of vernier scale are matching with 19 divisions of main scale

Text Solution

Verified by Experts

20 vernier scale divisions = 19 mm
1 vernier scale division `= (19)/(20)mm`
where least count = (Main scale division - vernier Scale division)
`=1mm - 19//20mm`
`= 0.05 mm`
Thickness of the object = (main scale reading) + (vernier scalw Reading) (least coun)
So thickness of the object `= 13 mm + (12) )0.05mm)`
`13.60mm` .
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The side of a cube is measured by vernier callipers ( 10 divisions of a vernier scale coincide with 9 divisions of main scale, where 1 division of main scale is 1mm ). The main scale reads 10mm and first division of vernier scale coincides with the main scale. Mass of the cube is 2.736 g . find the density of the cube in appropriate significant figures.

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Knowledge Check

  • What is least count of the given vernier caliper? There is one vernier caliper in which 1 main scale division (MSD) is 1mm. It is given that 10 divisions of vernier scale match with 9 divisions of main scale. Given vernier caliper is used to measure the edge of a cube. Main scale reading (MSR) was found to be 10 and first division of the vernier scale was found to be coinciding with some division of the main scale. Mass of the cube is 2.736g.

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    B
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  • What is the edge length of the cube? There is one vernier caliper in which 1 main scale division (MSD) is 1mm. It is given that 10 divisions of vernier scale match with 9 divisions of main scale. Given vernier caliper is used to measure the edge of a cube. Main scale reading (MSR) was found to be 10 and first division of the vernier scale was found to be coinciding with some division of the main scale. Mass of the cube is 2.736g.

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  • In a vernier callipers, smallest division on the main scale is 1mm , while the vernier scale have 20 divisions. When fixed jaw touches with movable jaw, zero of vernier scale lies on the right of the zero of the main scale and 15th division of vernier scale coincides with any division of main scale. What is the type of zero error and its value?

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