Question

Identify the relation and fill in the blanks. a. Basic unit of length:------------ b. ------------------------: kilogram​

Answer 1

Answer:

a. basic unit of length- metre

b. basic unit of mass- kilogram

Answer 2

Answer:

a. Basic unit of length : metre (m)

b. Basic unit of mass : Kilogram (Kg)

Explanation:

a. The S.I unit of length is metre, a metre was originally defined in 1889 as the distance between two marks drawn on a platinum-iridium rod kept at 0°C in the International Bureau of Weights and Measures at Sevres near Paris. But later, it was defined in terms of light after several years.

Sub-units of metre (m):

• 1 cm = 1/100 m
• 1 mm = 1/1000 m
• 1 micron = 10^6th part of a metre
• 1 nm = 10^-9th part of a metre
• 1 Km = 1000 m and etc...

b. The S.I unit of mass is Kilogram, in 1889, one kilogram was defined as the mass of a cylindrical piece of platinum-iridium alloy kept at International Bureau of Weights and Measures at Sevres near Paris.

Sub-units of kilogram (Kg):

• 1 g = 1/1000 Kg
• 1 mg = 10^-6th part of Kg
• 1 quintal = 100 Kg
• 1 metric tonne = 1000 Kg