m = -q/p = 2.5

q = -2.5p = -2.5X0.05 = -0.125 m

Lensmaker's formula:

1/p + 1/q = (n-1)(1/R1 - 1/R2)

1/0.05 - 1/0.125 = 20 - 8 = 12 = (1.5 - 1)(1/0.6 - 1/R2) = (1/2)(1/0.6 - 1/R2)

1/2R2 = 0.8333 - 12 = -11.166

R2 = -0.0447 = -0.045 m

Answer is D

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