Question

The length of one rod is 2.53 cm and that of the other is 1.27 cm. The least count of the measuring instrument is 0.01 cm. If the two rods are put together end to end , find the combined length.

Answer 1

Answer:

3.8

Explanation:

l1=2.53

l2=1.27

formula

L=l1+l2

calculation

L=2.53+1.27

L=3.8 cm

Answer 2

Length l=2.53+1.27=3.80cm,

Δl=0.01+0.01=0.02,

(Most probable errors of both the rods are added)

Hence true value =(3.80±0.02)cm

Explanation:

final answer is : (3.80±0.02)cm