A student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure it? [2014]

Question:

10.A student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure it? [2014]

Options :

a) A meter scale
(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
(c) A screw gauge having 100 divisions in the circular scale and pitch as 1 mm
(d) A screw gauge having 50 divisions in the circular scale and pitch as 1 mm

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

Answer Steps :

Step1 :-