12. Which is an opaque material or object?
A. tinted glass B. white plastic bag C. wax paper D. wooden blocks
13. Which of the following object is transluscent?
A. red tire B. red cellophane C. white plastic bag D. sliding door
is the study of the refraction, reflection, absorption, and transmission of
14.
light
A. optics
B. visible lights C. refraction D. reflection
15. It is a light that is visible to human eye.
A refraction B. reflection C. visible light
D. optics​