Problem 3: using any literature you see fit, describe how a camera works (you can use the book, but also any outside material). feel free to include any sketches and examples. the point is to learn how optical systems are applied in the real life (5 points).

Answerthe force between the charges will be  f/9 (one-ninth of force f)explanationcoulomb's law relates the magnitudes  two point charges q₁ and q₂, the distance, r, between the charges, and the electrostatic force, f, between the two charges:     k represents coulomb's constant, k = 8.99×10⁹ n·m²/c².note that if we have r = 3r, then   

Iwould think it would be efficiency.