Question

4.____is a standard reference choosen to measure any physical quantity *

a. unit

b. Time

c. mass

d. Length​

Answer 1

Question:-

4.____is a standard reference choosen to measure any physical quantity *

Answer:-

✔a. unit

✘b. Time

✘c. mass

✘d. Length

Answer 2

The correct option is a. unit

• It represents a fundamental standard for measuring substantial quantities that is widely accepted across the world.
• It is the considerable size of a measurable amount specified and approved by standard convention or a specific legislation.
• A multiple of fundamental unit of precise measurement can be properly used to determine any other quantity of that specific type. A length, for example, is a physical quantity.