An object is placed 60 cm from a convex lens of focal length 15 cm. At what distance from the lens is the image formed?

Answer and explanation

Correct answer: D. 20 cm

  1. Step 1: With and : , so cm. Answer: 20 cm. Why not the others: 12 cm: uses a plus sign in the denominator. 30 cm: assumes the image is halfway. 75 cm: adds the object distance and focal length.

Practise more Physics and Chemistry Problems.

Free questions with an explanation for every one, and full timed UNI Admission Exam (Peru) mock tests.

An object is placed 60 cm from a… | UNI Admission Exam (Peru)