JEE Main 20146 April
- Exam
- JEE Main
- Year
- 2014
- Date
- 6 April
- Subject
- Physics
- Chapter
- Experimental Physics
JEE Main 2014 · 6 April · Physics · Experimental Physics
A student measured the length of a rod and wrote it as 3.50 cm....
A student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure it ?
Options
- AA meter scale
- BA vernier calliper where the 10 divisions in vernier scale matches with 9 division in main scale and main scale has 10 divisions in 1 cm
- CA screw gauge having 100 divisions in the circular scale and pitch as 1 mm
- DA screw gauge having 50 divisions in the circular scale and pitch as 1 mm
Correct answer
B. A vernier calliper where the 10 divisions in vernier scale matches with 9 division in main scale and main scale has 10 divisions in 1 cm
Step-by-step solution
As per given data the Vernier has a least count of 0.01 cm, which is consistent with the information given in question.