Answer:
Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work). The output work is always less than the input work because some of the input work is used to overcome friction. Therefore, efficiency is always less than 100 percent.
Monochromatic means a single colour (single frequency).
The frequency is 4.7 x 10^14 Hertz
A.There are 2 good point that land on an accurate calculation 1. (6,16) and 2.(12,28)
B.The slop of the graph is (3,2)
C. The y intercept is (0.4)
D. Not sure