Question

If you look at yourself in a shiny Christmas tree ball with a diameter of 9.0·cm when your face is 20.0·cm away from it, where is your image? (Your answer should be positive if the image is in front of the ball's surface, and negative if the image is behind it.)

cm (from the ball's surface)

Describe the image. Choose one answer only.

real and upright

real and inverted     virtual and upright

virtual and inverted

How large will the image of your face be compared to your actual face, measured in percent?
% of its actual size

Answer 1