Question

Map the following units of various physical quantities to whether they can be considered good unit or not.

• A. Metric Foot(Length)
• B. Tithi(Lunar Day)
• C. Cow's Grass(Area)
• D. Dog Year(Time)

Answer 1

A good unit's parameters are reproducability, standardization and the ease of access. Cow's grass is the area, a cow can graze on an average in a day. A dog year is an equivalent average life cycle of a dog in calendar years.