Give reason.
metre scale of platinum and iridium scale is preserved at 0°c.
Answers
Answer:
HOPE IT HELPS
MAKE ME BRAINLIST TOO
Explanation:
“1m” in this question means “1 meter”, where “meter” is the fundamental measure of length in the International System (SI, something in French, the system used in most civilized countries and by scientists here in the US).
The formal definition of the meter has gone through several changes. From 1927 to 1960 it was defined as the distance, at 0° Celsius, between the axes of two central lines marked on a reference bar of platinum-iridium held in controlled conditions by the BIPM (the international body governing weights and measures). I’m simplifying, by the way.
Since 1983 the meter has been defined as “The length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second.”
Answer:
this is the correct answer for this question
