Question

How many units are fundamental and complementary? (1) 2 fundamental, 7 complementary (2) 3 fundamental, 6 complementary (3) 7 fundamental, 2 complementary (4) 4 fundamental, 5 complementary

February 4, 2024

Answer

7 fundamental, 2 complementary

Reason — Fundamental and complementary units are as follows:

Fundamental Units	Unit	Symbol
Length	metre	m
Mass	kilogram	kg
Time	second	s
Temperature	kelvin	K
Luminous intensity	candela	cd
Electric current	ampere	A
Amount of substance	mole	mol

Complementary Units	Unit	Symbol
Angle	radian	rd
Solid angle	steradian	st-rd

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