Q. Define Meter.

Answer:

Metre (m): 

It is the base unit of length in the International System of Units (SI), having the unit symbol 'm'.


Definition:

One Metre is the distance between the two points of alloy rod/bar of Platinum (90%) and Indium (10%) placed under controlled conditions in Paris (France)

or

The distance is equal to 1650763.73 wavelengths of the orange-red emission line in the electromagnetic spectrum of the krypton-86 atom in a vacuum.

or

The length of the path traveled by light in a vacuum during a time interval of 1/299,792, 458 of a second.



 ************************************

Shortcut Links For 


1. Website for School and College Level Physics   
2. Website for School and College Level Mathematics  
3. Website for Single National Curriculum Pakistan - All Subjects Notes 

© 2023 Academic Skills and Knowledge (ASK)     

Note:  Write to me in the comments box below for any query and also Share this information with your class-fellows and friends.