The figure shows ameter stick lying on the bottom of a 100-cm-long tank with its zeromark against the left edge. You look into the 50 cm tall tank at a30 degree angle, with your line of sight just grazing theupper left edge of the tank. What mark do you see on the meterstick if the tank is empty?
What mark do you see on the meter stick ifthe tank is half full of water? What mark do you see on the meterstick if the tank is completely full of water?