What best describes the set of focal points of a thin convex lens?

two focal points on opposite sides of the lens, with one point twice as far from the lens as the other point

two focal points on the same side of the lens, with one point twice as far from the lens as the other point

two focal points on opposite sides of the lens, each the same distance to the lens one focal point located either in front of or behind the lens

Solar cell a produces 100 joules of energy, when a light source is shown on it for 3 minutes. solar cell b produces 200 joules of energy when the same light source is shown on it for 5 minutes. which solar cell works better? a) solar cell b, because it produces more energy. b) solar cell b, because it generates more power. c) solar cell a, because it produces energy quicker. d) solar cell a, because it generates a greater wattage. eliminate

2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.

Which one of the following research methods can show cause and effect