Example 3 An astronomical telescope has lenses of focal lengths, 100 cm and 10 cm
respectively, and is used for viewing an object 4 m from the objective. If the
final image is formed 25 cm from the eye placed close to the eye-piece, calculate
the distance between the lenses.
Solution

The coulomb's law explains which of the following? select all the force between two charged objects is inversely proportional to the charge on each object. the force between two charged objects is directly proportional to the charge on each object. the force between two charged objects is directly proportional to the distance separating them. the force between two charged objects is inversely proportional to the square of the distance separat coulomb's law is similar to newton's 2nd law. if the force between two objects is f and the charge on both objects is doubled, the new force between the would now be 2f. if the force between two objects is 2f and the distance separating them is doubled, the new force between the objects would now o the be zf.