Find the focal length of a converging lens that produces a focused real image 3 cm from the lens of an object that is 7 cm from the lens. Draw a ray diagram for this configuration.
magnification
m = v /u = - 3
v = - 3* u
v = - 3* (-7)
v = 21 cm
using lens formula
1/f = 1/v - 1/u
1/f = 1/21 + 1/7
f = 5.25 cm
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Find the focal length of a converging lens that produces a focused real image 3 cm...
Find the focal length of a converging lens that produces a focused real image 3 cm from the lens of an object that is 7 cm from the lens. Draw a ray diagram for this configuration.
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