Using a microscope and magnification Quiz
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5 questions, one answer each
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1. Which is the correct formula for magnification?
- A. actual size ÷ image size
- B. image size × actual size
- C. image size ÷ actual size
- D. image size − actual size
2. A cell is 25 µm wide. What is this in millimetres?
- A. 0.025 mm
- B. 0.25 mm
- C. 2.5 mm
- D. 25 000 mm
3. An eyepiece lens of ×10 is used with an objective lens of ×20. What is the total magnification?
- A. ×30
- B. ×2
- C. ×120
- D. ×200
4. A drawing of a cell is 50 mm wide and the magnification is ×250. What is the actual width?
- A. 5 mm
- B. 0.2 mm
- C. 12 500 mm
- D. 0.02 mm
5. How should a cover slip be lowered onto a wet mount slide?
- A. Slowly at an angle
- B. Dropped flat from above
- C. Pressed down firmly with a finger
- D. Placed on before the specimen