In order to measure focal length of a diverginglens (L2), we set up the following experiment (as shown inthe right figure). It uses another converging lens (L1). Anobject (o) is placed in front of lens (L1). The image of theobject can be seen on a screen (S,), which is located 20cmbehind lens (L2). Next, after removing lens (L2) only, theimage can be restored (seen) by moving screen 5cm towardlens (L1) to a new location of S2. Please compute the focallength of lens (L2).L,L2S25cm20cm

When two or more lenses are combined they form a composite lens. The focal length of a composite…

In order to measure focal length of a diverging lens (L2), we set up the following experiment (as shown in the right figure). It uses another converging lens (L1). An object (o) is placed in front of lens (L,). The image of the object can be seen on a screen (S1), which is located 20cm behind lens (L2). Next, after removing lens (L2) only, the image can be restored (seen) by moving screen 5cm toward lens (L,) to a new location of S2. Please compute the focal length of lens (L2). L, L2 S2 5cm 20cm

In order to measure focal length of a diverging lens (L2), we set up the following experiment (as shown in the right figure). It uses another converging lens (L1). An object (o) is placed in front of lens (L,). The image of the object can be seen on a screen (S1), which is located 20cm behind lens (L2). Next, after removing lens (L2) only, the image can be restored (seen) by moving screen 5cm toward lens (L,) to a new location of S2. Please compute the focal length of lens (L2). L, L2 S2 5cm 20cm