6. A glass prism has u=1.5 and the refracting angle is 90°. If a ray falls on it at angle of incidence of
30°, then the angle of emergence is
[ ]
a) 60°
b) 30°
c) 450
d) the ray will not emerge out of this prism

false

explanation:

boats, things on boats luggage are way more heavy then water.

i would think it's food chain

i dont have a visual in front of me, but i can you reason to try to get the right one. the graph should look like this, 0 to 6 there is a spike, 12 to 14 there should be a very low point. slight increase in the graph at 12 to 14, and flat 14 to 18

explanation: