Q

Two lenses of powers +2.0 D and -0.25 D are in contact. What is the equivalent power?

RRB Technicians Grade-III 27/12/2024 / Shift-III 2024
✓ Answer: B +1.75 D
P = P₁ + P₂ = 2.0 - 0.25 = +1.75 D.
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