An object is placed 30 cm in front of a f=+15 cm lens. a lens f=-10 cm is placed 45 cm from the first lens. draw the 3 principal rays to explain the location of the final image.

potential energy is directly proportional to height.

more height = more potential energy.

greatest increase in height = greatest increase in potential energy

where are the points with the greatest increase in height ?

has to be c-e or d-e .

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.

it would be c. predictability