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Question

It is desirable that the standards of units be easily available, invariable, indestructible and easily reproducible. If we use foot of a person as a standard unit of length, which of the above features are not present?



Correct Answer
A

Easily available

Your Answer
B

Invariable

Correct Answer
C

Indestructible

Correct Answer
D

Easily reproducible


Solution

The correct options are
A

Easily available


C

Indestructible


D

Easily reproducible


The foot of a person is invariable but not available, not indestructible and not easily reproducible. While reproducing there can be human error.

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