If a lens is moved towards the object from a distance of 40cm to 30cm, the magnificayion of the image remains the same numerically. what is the focal length of the lens? Share with your friends Share 4 Utkarsh Ranjan answered this 40 + 30 ÷ 2 = 35 (Answer) -8 View Full Answer Vedant answered this one virtual and on real image formed so -f/u1-f = f/u2-f so it comes u1+u2/2 2 Ruchika Arora answered this We can solve by this 21
