 Okay, 5 cm in length is placed at a distance of 20 cm. In front of a Kaam की बात कई है, Convex mirror. जऐसे ही मिरर दिखता है, है, I'll write mirror formula, 1uppon V plus 1uppon U. लए, sign convention will hit my mind that convex mirror, focal length is positive. Object distance is negative for anything. तो साईन सेंदिमिता