GKFix MCQ Question

What is the expression for the power of the glass lens in air (P_glass_air)?

• A. P_glass_air = (n_lens - 1)(1/R)
• B. P_glass_air = (n_lens - 1)(2/R)
• C. P_glass_air = n_lens(2/R)
• D. P_glass_air = (1 - n_lens)(2/R)