Physics Problem: Images and a Converging Lens

You find a small converging lens. When you place an object 9 cm from the lens, it produces a real image at a distance of 13 cm from the lens (on the other side) - you project this image on a screen because it looks cool.
a) What would happen if you put the object at a distance of 3.5 cm from the lens?
b) Where would you put the object so that it would for a real image on the screen at a distance of 20 cm?
I'm working through chapter summaries for introductory physics (algebra-based). I'm using the Openstax online (free) textbook College Physics. You can access this book here openstax.org/d...
Here is the playlist with all the videos and problems for this course.
• Online Physics 2 2024

[@fizixx]

Fun! 🥳

[@P.SHIVAJI524]

Sir could you please provide your notes and reference best book also

[@DotPhysics]

Soon I will post all my materials online. But until then I'm following the openstax textbook - openstax.org/details/books/college-physics-2e Here's my playlist for this semester kzbin.info/aero/PLWFlMBumSLSY8b4oaNH4J3msC_oPjOxDz