Question

In an orbital motion, the angular momentum vector is

(a) along the radius vector

(b) parallel to the linear momentum

(c) in the orbital plane

(d) perpendicular to the orbital plane.

Answer 1

Correct option (d) perpendicular to the orbital plane.

Explanation :

tn orbital motion, the angular momentum vector is perpendicular to the plane in which the rotational motion take place and its sense is given by the right hand first rule. When the fingers of right hand fist point in the direction of motion, the thumb is in the direction of vector L (angular momentum).