Physics · May / June 2022 · Paper 11 · Question 11

The total energy incident in 1.0 s on a group of solar panels is 120 J / m^2. The group of solar panels converts 720 J of light energy to 120 J of useful electrical energy in 1.0 s. What is the total surface area of the panels and what is the efficiency of the system? | | total surface area of solar panels / m^2 | efficiency / % | |---|---|---| | A | 6.0 | 17 | | B | 0.17 | 6.0 | | C | 6.0 | 6.0 | | D | 0.17 | 17 |

1. A6.0, 17
2. B0.17, 6.0
3. C6.0, 6.0
4. D0.17, 17

As printed in the paper