A Level biology – Magnification calculations

Last updated: 07/07/2020

AQA A-Level Biology Cell structure A Level biology – Magnification calculations

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Question 1 of 19

1. Question
If a light microscope with magnified 400 times and the image seen is 0.5cm long, how long was the actual object?
- 12.5 micrometres
- 2 micrometres
- 1.25 millimetres
- 2 millimetres
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Question 2 of 19

2. Question
If a 0.5 micrometre scale bar on a TEM image appears 2cm long, what is the magnification?
- 40000x
- 4000x
- 250000x
- 25000x
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Question 3 of 19

3. Question
In which order do the following units come from smallest to largest
- Nanometres, micrometres, millimetres
- Millimetres, nanometres, micrometres
- Millimetres, micrometres, nanometres
- Micrometres, nanometres, millimetres
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Question 4 of 19

4. Question
Which are not the same?
- 400 millimetres and 0.4 micrometres
- 5000 micrometres and 5 millimetres
- 700 micrometres and 0.7 millimetres
- 3 millimetres and 3000 micrometres
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Question 5 of 19

5. Question
If an image measures 4mm and is magnified 400 times, what is the object size?
- 10 micrometres
- 16 micrometres
- 1 micrometre
- 100 micrometres
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Question 6 of 19

6. Question
If an image measures 0.6cm and the object was 6 micrometres, what is the magnification?
- 1000x
- 10x
- 100x
- 10000x
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Question 7 of 19

7. Question
Which of the following is correct
- Magnification equals the size of image divided by the real size of the object
- Magnification equals the size of image multiplied by the real size of the object
- Magnification equals the size of image plus the real size of the object
- Magnification equals the size of image minus the real size of the object
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Question 8 of 19

8. Question
How is magnification calculated?
- Size of image divided by size of the real object
- Size of the real object divided by size of image
- Size of image multiplied by size of real object
- Size of real object multiplied by size of image
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Question 9 of 19

9. Question
How would you calculate the size of the real object?
- Size of image divided by the magnification
- Magnification divided by the size of image
- Size of image multiplied by magnification
- Magnification multiplied by size of image
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Question 10 of 19

10. Question
If an object is 100 nm and the size of image is 10 mm, what is the magnification?
- 100000x
- 10000x
- 1000x
- 1000000x
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Question 11 of 19

11. Question
If an image is 15 millimetres, and the magnification is 10000x, what is the size of the real object?
- 1.5 micrometres
- 15 micrometres
- 150 nanometres
- 15 nanometres
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Question 12 of 19

12. Question
If an image is 32 millimetres, and the magnification is 5000x, what is the size of the real object?
- 6.4 micrometres
- 32 micrometres
- 640 nanometres
- 320 nanometres
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Question 13 of 19

13. Question
If an image is 1.5 millimetres, and the magnification is 500000x, what is the size of the real object?
- 3 nanometres
- 300 nanometres
- 3 micrometres
- 15 nanometres
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Question 14 of 19

14. Question
If an object is 150 nm and the size of image is 45 mm, what is the magnification?
- 300000x
- 30000x
- 3000x
- 3000000x
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Question 15 of 19

15. Question
If the size of the real object is 300 nm and the magnification is 25000x, what will the size of the image be?
- 7.5 mm
- 15 mm
- 750 µm
- 150 µm
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Question 16 of 19

16. Question
If the size of the real object is 420 nm and the magnification is 30000x, what will the size of the image be?
- 12.6 mm
- 6.3 mm
- 126 µm
- 630 µm
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Question 17 of 19

17. Question
How would 50 nanometres be written in millimetres?
- 0.00005 mm
- 0.0005 mm
- 0.000005 mm
- 0.005 mm
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Question 18 of 19

18. Question
How would 1.4 millimetres be written in nanometres?
- 1400000 nm
- 14000000 nm
- 140000 nm
- 14000 nm
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Question 19 of 19

19. Question
How would 5.62 micrometres be written in nanometres?
- 5620 nm
- 562 nm
- 56200 nm
- 56.2 nm
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