Question

which mirror has focus infinity

Answer 1

HELLO


YOJR ANSWER IS



WHEN A PARALLEL BEAM OF LIGHT FALLS ON THE MIRROR ,AFTER REFLECTION THESE RAYS OF LIGHT GO IN OPPOSITE DIRECTION BY SATISFYING LAWS OF REFLECTION.THUS DUE TO THIS THEY MEET AT INFINITY WHICH IS KNOWN AS "FOCUS".THUS FOCAL LENGTH IS INFINITE.

Answer 2

concave mirror.................