The photograph of a house occupies an area of 1.75 cm^(2) on a 35 mm side. The slide is projected on to a screen, and the area of the house on the screen is 1.55 m^(2). What is the linear magnification of the projector-screen arrangement.

The photograph of a house occupies an area of 1.75 cm^(2) on a 35 mm s

1.	The photograph of a house occupies an area of 1.75 cm^(2) on a 35 mm side. The slide is projected on to a screen, and the area of the house on the screen is 1.55 m^(2). What is the linear magnification of the projector-screen arrangement.
Answer» Solution :AREA of object `=1.75 MC^(2)` `=1.75xx10^(-4)` Areaof image `=1.55 m^(2)` Area magnification, `m=("Area of image")/("Area of object")=("Area on screen")/("Area on SLIDE")` `m=(1.55)/(1.75xx10^(-4))` `m=0.8857xx10^(4)` LINEAR magnification `=sqrt("Areal magnification")` `=sqrt(0.8857xx10^(4))` `=0.941xx10^(2)=94.1`