A Lens Is Made with Focal Length -40 Cm Using

question 62

Multiple Choice

A lens is made with focal length -40 cm using a material with index of refraction 1.50. A second lens is made with the same geometry as the first but using a higher index material, the index being 2.00. What is the focal length of the second lens?

• A)-40 cm
• B)-80 cm
• C)-53 cm
• D)-20 cm
• E)-30 cm

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