Question

a student has to project three times magnified image of candle flame on the wall name the lens required for this purpose what is the image distance in the focal length of lens is 15 cm​

Answer 1

Answer:

Hey!!!

The lens required must be convex or converging lens.

The object distance must be either

• 0cm<u<15cm(virtual magnified image)
• 15cm<u<30cm(real magnified image)

I hope it helps you ^_^