Biology

Magnification calculation exam questions- Unit 1 Microscopes
(c) A eukaryotic cell has an actual diameter of 25 m.
The observed diameter of the eukaryotic cell in a photomicrograph is 1.5 cm.
Calculate the magnification used to view the image.
Show your working.

Reply 1

bl0bf1sh

15

Original post by Nnnooorrraaa

Magnification calculation exam questions- Unit 1 Microscopes
(c) A eukaryotic cell has an actual diameter of 25 m.
The observed diameter of the eukaryotic cell in a photomicrograph is 1.5 cm.
Calculate the magnification used to view the image.
Show your working.

What are you thinking so far?
What is the equation for calculating magnification?
Remember to pay attention to the units :smile:

Reply 2

VoiidDev

10

The formula for magnification is Image size ÷ actual size. Are you sure all the units are correct?

Original post by Nnnooorrraaa

Magnification calculation exam questions- Unit 1 Microscopes
(c) A eukaryotic cell has an actual diameter of 25 m.
The observed diameter of the eukaryotic cell in a photomicrograph is 1.5 cm.
Calculate the magnification used to view the image.
Show your working.

Hey @Nnnooorrraaa 👋

Have you got the right units? Should it be 25μm (micrometers)

Start by converting 1.5cm into μm so that both values have the same units

Best wishes
Essex Student Rep - Hayley

Reply 4

VoiidDev

10

Original post by Nnnooorrraaa

Magnification calculation exam questions- Unit 1 Microscopes
(c) A eukaryotic cell has an actual diameter of 25 m.
The observed diameter of the eukaryotic cell in a photomicrograph is 1.5 cm.
Calculate the magnification used to view the image.
Show your working.

If the eukaryotic cell is 25m in diameter and you can't see it, maybe you need glasses instead of a microscope 🫤