Question

we know that radian per second is a unit of angular velocity. but revolution per second is the unit of which quantity? please Sahi Sahi answer batana is spamming mat Karna bahut bura lagta hai jab spamming karte Hain log bahut gussa aa jata hai .​

Answer 1

Angular frequency ω (in radians per second), is larger than frequency ν (in cycles per second, also called Hz), by a factor of 2π, because 2π rad/s corresponds to 1 Hz.
General information
Unit system
SI derived unit
Unit of
rotational speed
Symbol
rad/s or rad⋅s−1 
Angular frequency ω (Ordinary) frequency
ν
=
ω
/
2
π
\nu =\omega /{2\pi }
2π radians per second exactly 1 hertz (Hz)
1 radian per second approximately 0.159155 Hz
1 radian per second approximately 57.29578 degrees per second
1 radian per second approximately 9.5493 revolutions per minute (rpm)
0.1047 radians per second