Which type of curved mirror uses its inside as the reflecting surface? a. a convex mirror b. a plane mirror c. a virtual mirror d. a concave mirror

Concave Mirror

Explanation:

1).Concave Mirror

here the reflecting surface is curved inside then it is always concave mirror

2). Convex mirror

here the curved surface outwards will be the reflecting surface and focus is taken as negative as it always forms virtual image of smaller size.

3). Plane Mirror

here the reflecting surface is always plane surface and straight surface and its focus is infinite and always forms virtual image of same size

answer///terminator or twilight zone;