What is $1$ radian ? What is $1$ steradian ?

Vedclass pdf generator app on play store
Vedclass iOS app on app store

$(1)$ Plane angle subtended at centre by arc of circle having length equal to radius is called  radian. 

$(2)$ Angle subtended on $1 \mathrm{~m}^{2}$ area on sphere of $1 \mathrm{~m}$ radius is called 1 steradian.

 

Similar Questions

Unit of energy in $SI$ system is

Which of the following is a derived unit

Newton-second is the unit of

A suitable unit for gravitational constant is

$'Torr'$ is the unit of