Question

Short Answer Type Questions
1.Why cannot a foot length or cubit be used as a standard unit of length?
2.Name the SI unit of length. State its one multiple and two submultiples.​

Answer 1

Answer:

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Answer 2

Answer:

1. A pace or a footstep cannot be used as a standard unit of length because the length of footstep, forearm length and hand span of different person is different. So footsteps and other such measuring systems cannot be use as standard unit.

2. The S.I unit of length is one metre.

One metre is defined as the distance travelled by light in air in 1 / 299,792,458 of a second

Multiple of metre = Kilometre

Submultiple of metre = Centimetre

Explanation:

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