56. What is the name of the type of lens that can focus parallel rays of light to a single point?
a) Convex lens
b) Concave lens
c) Plano-convex lens
d) Plano-concave lens
57. What is the name of the type of lens that can spread out parallel rays of light?
a) Convex lens
b) Concave lens
c) Plano-convex lens
d) Plano-concave lens
58. What is the name of the process where a material converts light energy into electrical energy?
a) Reflection
b) Refraction
c) Absorption
d) Photoelectric effect
59. What is the name of the process where light waves bounce off a surface and change direction?
a) Reflection
b) Refraction
c) Diffraction
d) Interference
60. What is the name of the process where light waves bend as they pass through a material with a different refractive index?
a) Reflection
b) Refraction
c) Diffraction
d) Interference
