The light beam travels from air into water,the angle of incidence is 60 degress. The bent beam creates point F on the bottom of eater tank.If we imagine extension of incident beam inside the water, we obtain point B on the bottom of water tank. The distance between F and B is 1m. Calculate the depth of the water.
The Attempt at a Solution
First i used the Snells law to obtain the angle of the bent beam.
Second i thought i use trigonometric functions to obtain the height.
tg(angle1)=x/h and tg(angle2)=(x+1)/h
From which I obtained negative value of x, which confused me.
So guys, do you think this is the way to go or someone has any different ideas?
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