Two mirrors of equal size—one plane and the other convex—are used as rear-view…
PHYSICS · Single correct · AP · Physics 2: Algebra-based · Geometric Optics · Geometric Optics
Problem
Two mirrors of equal size—one plane and the other convex—are used as rear-view mirrors on identical motorbikes at the same road junction. Which statement correctly explains why the rider using the convex mirror observes a larger field of view?
(a) Because the image formed by a convex mirror is always diminished, several objects can fit into the smaller image space, giving the impression of a wider view.
(b) Reflected rays from the convex surface diverge as if they come from a point behind the mirror, allowing the eye to receive light from a wider angular region.
(c) The negative focal length of a convex mirror makes the reflected rays converge earlier toward the axis, thereby spanning a larger scene.
(d) A convex mirror reflects a larger percentage of the incident light than a plane mirror, so more surroundings become visible.