<u>Answer:</u> The mirror that causes light to spread out is convex mirror
<u>Explanation:</u>
There are 2 types of spherical mirror:
Convex mirror is defined as the mirror which diverges the light falling on it. It is considered as a diverging mirror. They spread out the light falling on it.
Concave mirror is defined as the mirror which converges the light falling on it. It is considered as a converging mirror. They spread in the light falling on it.
Plane mirror is defined as the plane reflecting mirror. The image produced by it is virtual, upright and of the same size and shape as that of the object.
Hence, the mirror that causes light to spread out is convex mirror
