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2.9 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. Whatis the linear magnification of the projector-screen arrangement..10 State the number of significant figures in the following: |
| Answer» EXPLANATION: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 = Area of Image / Area of Object = (1.55 / 1.75) X 104 ∴Linear magnifications, ml = UNDERROOT ma= | |