What is the possessive form of physics?

Answer 1

The noun "physics" is an uncountable (mass) noun that is treated as a singular.

There are two accepted forms that show possession for singular nouns ending in s:

Add an apostrophe (') after the existing s at the end of the word:

• physics'

Add an apostrophe s ('s) after the existing s at the end of the word:

• physics's

Examples:

When I reviewed the course, I was surprised by physics' diversities.

When I reviewed the course, I was surprised by physics's diversities.

Answer 2

The possessive form of "physics" is "physics's" or "physics'". Both forms are considered acceptable, but "physics's" is more commonly used in formal writing.