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4. A lens placed a distance x from a luminous object produces a clear image on a screen 30 cm from the lens. When the sc
Posted: Mon May 02, 2022 9:08 pm
by answerhappygod
- 4 A Lens Placed A Distance X From A Luminous Object Produces A Clear Image On A Screen 30 Cm From The Lens When The Sc 1 (34.24 KiB) Viewed 47 times
4. A lens placed a distance x from a luminous object produces a clear image on a screen 30 cm from the lens. When the screen is moved 10 cm further away from the lens, the lens must be moved 1 cm closer to the object in order to restore a clear image. (a) Calculate the distance x. (b) Calculate the focal length of the lens. [(a) +11.09 cm, (b) +8.10 cm]