everyday science MCQ #49881

The lens formula relating object distance (u), image distance (v), and focal length (f) is:

everyday science MCQ #49881

  1. Question 1

    Q1. The lens formula relating object distance (u), image distance (v), and focal length (f) is:

    • A) 1/f = 1/u - 1/v
    • B) 1/f = 1/u × 1/v
    • C) 1/f = 1/v - 1/u
    • D) 1/f = v + u

    Answer: 1/f = 1/v - 1/u

    Explanation: The standard lens formula is 1/f = 1/v − 1/u, where f is the focal length, v is the image distance, and u is the object distance (negative for a real object using the real-is-positive sign convention). This formula applies to both converging and diverging thin lenses.