How is sunlight spectral patter similar to that from the long filament light bulb.

What color would an object that reflects green and blue light appear to be in white light? a. blue b. cyan c. magenta d. black

How does the image distance (di) of a convex lens compare with the image distance of a concave lens? a. the image distance of the convex lens is positive, and that of the concave lens is negative. b. both are negative for a virtual image. c. both are positive for a virtual image d. the image distance of the convex lens is negative, and that of the concave lens is positive.

Apossible explanation for a set of facts that can be tested by further investigation is called