1 metre can be defined as distance travelled by light in $\frac{1}{299792458}$ seconds in vacuum.

True

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False

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Solution

The correct option is A True
A suitable standard of unit is one which does not change with time or place. For example, if we take a rod as a standard, then it might contract during winters or expand in summers. In case of a foot, it varies from person to person, so it is not a suitable option. But, the speed of light in vaccum is constant throughout the universe; hence it is a suitable standard.

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Similar questions

Q. The metre is defined as the distance travelled by light in

\frac{1}{299, 792, 458}

second. Why didn't people choose some easier number such as

\frac{1}{300, 000, 000}

second? Why not 1 second?

1 metre can be defined as distance travelled by light in $\frac{1}{299792458}$ seconds in vacuum.

Q. 1 metre can be defined as the distance travelled by light in

\frac{1}{299792458} s

in vacuum.

The meter is defined as the distance traveled by light in 1/299792458 seconds? why didn't people choose some easier number than 1/300000000 seconds? why not 1 second?

Q. The metre is defined as the distance travelled by light in 1/299792458 second.why don't people choose some easier number such as 1/300000000 second?

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1 metre can be defined as distance travelled by light in 1299792458 seconds in vacuum.

1 metre can be defined as distance travelled by light in $\frac{1}{299792458}$ seconds in vacuum.