The answer is C) <span>The higher frequencies of visible light were scattered by the colloid particles.</span>
Answer: f = - 0.50 m, negative (diverging) lens
Explanation: D-value (diopter ) means 1/f, unit is 1/m. Thus -2.0D
Means f = ( 1/ -2.0 ) m = -0.50 m
I would say A not 100℅ thou
