A student viewed a section of a leaf using a microscope.The student measured the length of one of the palisade cells.The cell image measured 28 mm in length when viewed at a magnification of ×400Calculate the real length of the palisade cell in millimetres (mm).Use the equation:

A scientist observed a skin cell using an electron microscope.The size of the image was 25 mm, and the magnification was × 100,000.Calculate the real size of the cell, giving your answer in nm.

Nathan is observing an ant using a digital microscope. The length of the image is 22mm. The ant's actual length is 2mm. Calculate the magnification of the image.

Magnification can be calculated using the equation: magnification = size of image / actual size of the specimen. A bacterial cell is 0.003mm long. A magnified image of the cell is 21mm long. The magnification of the image is ×_____.

A student investigated how the magnification produced by a convex lens varies with the distance(d) between the object and the lens.The student used the apparatus shown in Figure 1.Figure 13.(a) The student measured the magnification produced by the lens by measuring the imageheight in centimetres.Explain why the image height in centimetres was the same as the magnification.____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________(2)Page 5 of 51Waves (F)

x40 objective lens and estimated the field of view to be 480 um. The student also estimated that 12 cells of this specimen fit across the field of view. The student completed a scientific drawing of one of the cells, and the drawing of the cell measured 16 cm in length.What is the size of each cell in um?