Carot ants proancetheir frst year. These are used in their second year to three

Question

Carot ants proancetheir frst year. These are used in their second year to three carrot seeds as seen under a light microscope 10 Fig. 13.2 You are going to calculate the magnification of fig. 13.2 Measure the length of line ST drawn on one of the seeds in Fig. 13.3 length of ST The scale rule shows 10mm, divided into 100 divisions, each of 0.1mm. Use the scale rule to measure the actual width of the seed marked by line ST. actual width of seed, marked by ST (using scale rule) Calculate magnification of Fig. 13.2 Show your working. Give your answer to the nearest whole number Magnification x

Explanation / Answer

Length of ST as measured by regular scale = 1.5cm = 15mm (A)

Now, to find length of ST on scale rule:

Starting point (S) = 7.7mm

Ending point (T) = 9.2mm

Therefore, length of ST = (9.2 - 7.7) = 1.5mm (B)

Now,

to find magnification,

magnification(X) = A/B = 15/1.5 = 10

Therefore, the image has been magnified 10 times.

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