An illuminated bulb and a screen are placed 90 cm apart. What is the f – InterviewSolution

1.	An illuminated bulb and a screen are placed 90 cm apart. What is the focal length of the lens required to produce a real image twice the size of object, on the screen?
Answer» An illuminated bulb and a screen are placed $90 c m$ apart. What is the focal length of the lens required to produce a real image twice the size of object, on the screen?

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