![A student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure it?](https://www.gkseries.com/blog/wp-content/uploads/2022/10/A-student-measured-the-length-of-a-rod-and-wrote-it-as-3.50-cm.-Which-instrument-did-he-use-to-measure-it.png)
Q. A student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure it?
- Ameter scale
- A vernier calliper where the 10 divisions in vernier scale matches with 9 divisions in main scale and main scale has 10 divisions in 1 cm
- A screw gauge having 100 divisions in the circular scale and pitch as 1 mm
- A screw gauge having 50 divisions in the circular scale and pitch as 1 mm
Answer: A vernier calliper where the 10 divisions in vernier scale matches with 9 divisions in main scale and main scale has 10 divisions in 1 cm