Question

Work is said to be negative when f and d are:
a. Parallel b. Anti Parallel c. Perpendicular d. at 45°​

Answer 1

Option B, Antiparallel

"Work is said to be negative when force and displacement are in opposite direction."

But here, there is an option called Antiparallel, which means a parallel that runs in opposite direction. So, practically, negative work can be possible only in this case.

Answer 2

OPTION B ) ANTI PARALLEL is the answer