Question

is it true or false A Ray of light which passes through the focus becomes parallel to the principal Axis after reflection​

Answer 1

Yes it is true. But not always. It's true only if the ray is a para-axial ray.

Para-axial Rays : The rays which are parallel to the principal axis and are situated very close to it

Answer 2

yes is true  A Ray of light which passes through the focus becomes parallel to the principal Axis after reflection​