Question

(part 1) An ant is 20 cm away from a convex mirror with a radius of curvature of 30 cm. What is the image distance, and is the image real or virtual.

A. 60 cm; real

B. 8.6 cm; real

C. 8.6 cm; virtual

D. 60 cm; virtual

(part 2). A virtual image of a beetle is formed 9.0 cm from a spherical mirror and the actual beetle stand 5 cm from the mirror. What is the focal length of the mirror and is it convex or concave.

A. 11.3 cm; Concave

B. 3.2 cm; Convex

C. 3.2 cm; Concave

D. 11.3 cm; Convex

Answer 1