Solved: When an object is placed 60.0 cm from a certain

Solution 89GP:

        We have to find the focal length of the lens using the given data.

Step 1 of 3

Concept:

        The point where the incident parallel rays come to a focus after reflection is called the focal point of the lens. The distance from the center of the len to the focal point is called focal length, denoted by .

Distance of the object is measured by using the lens equation, which is given as below:

                                        …(A)

Here,    Distance of the object from the optical center

 Distance of the image from the optical center