D. White is a reflectiom of all colors
I would said A is the best option if i’m wrong sorry
Explanation:
When hot water is poured on the can in a bucket of cold water, the can crushes off means it gets unshaped
Use the Inverse square law, Intensity (I) of a light is inversely proportional to the square of the distance(d).
I=1/(d*d)
Let Intensity for lamp 1 is L1 distance be D1 so on, L2 D2 for Intensity for lamp 2 and its distance.
L1/L2=(D2*D2)/(D1*D1)
L1/15=(200*200)/(400*400)
L1=15*0.25
L1=3.75 <span>candela</span>
9 because speed=distance/ time
