Boojho and Paheli were given one mirror each by their teacher. Boojho found his image to be erect and of the same size whereas Paheli found her image erect and smaller in size. This means that the mirrors of Boojho and Paheli are, respectively
When the image is erect and of same size as object then it is a plane mirror so Boojho has plane mirror
When the image is erect and of small size than object then it is a convex mirror so Paheli has a convex mirror