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?

Easily available

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Invariable

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Indestructible

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Easily reproducible

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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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Similar questions

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?

Q. Why is foot not used as the standard unit of length?

The length of a foot can be used as a standard unit.

Q. Assertion(A): Footstep cannot be used as a standard unit of measurement.
Reason(R): Ancient units are not fixed in length and vary from person to person.

Q. Assertion(A): Cubit cannot be used as a standard unit of measurement.
Reason(R): Ancient units are not fixed in length and vary from person to person.

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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?

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.

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.