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# The photograph of a house occupies an area of 1.75 cm2 on a 35 mm slide. The slide is projected on to a screen, and the area of the house on the screen is 1.55 m2. What is the linear magnification of the projector-screen arrangement.

##### The photograph of a house occupies an area of 1.75 cm2 on a 35 mm slide. The slide is projected on to a screen, and the area of the house on the screen is 1.55 m2. What is the linear magnification of the projector-screen arrangement.

Kevin Nash
7 years ago

Area of the house on the slide = 1.75 cm2

Area of the image of the house formed on the screen = 1.55 m2

= 1.55 × 104 cm2

Arial magnification, ma =

∴Linear magnifications, ml =