A Plano-Concave Lens Has R₁ = 15 Cm and Is

question 21

Multiple Choice

A plano-concave lens has r₁ = 15 cm and is constructed of a material with refractive index of 1.5. The focal length of the lens is

• A) -15 cm
• B) 15 cm
• C) -30 cm
• D) 30 cm
• E) None of these is correct.

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Definitions:

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Depositary Bank

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