A convex lens of power 4D is placed at a distance of 40 cm from a wall. At what distance from the lens should a candle be placed so that its image is formed on the wall?

🎲 Try a Random Question  |  Total Questions in Quiz: 50  |  🧠 Study this quiz with Flashcards
This question is part of a full practice quiz:
Class 10 Olympiad Science Mock Test 3 — practice the complete quiz, review flashcards, or try a random question.


A convex lens of power 4D is placed at a distance of 40 cm from a wall. At what distance from the lens should a candle be placed so that its image is formed on the wall?