- A⁻⁵ m
- B⁻³ m
- C7.5 m
- D⁻⁶ m
Step-by-Step Solution
The image is 1.5 cm wide and is 500 times the real size, so the grain is cm m m. (7.5 m multiplies by 500 instead of dividing.)
Answer: A) ⁻⁵ m
Through the microscope, the image of a pollen grain measures across as shown on the scale. What is the real width of the pollen grain, in metres, in standard form?
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