# Magnification URGENT! watch

1. A rep is available!!!

OK basically you have to calculate the magnification of the cell.

There is an image of the cell, which has a diameter of 8.8cm and there is a scale bar of 4 micrometers (1.9cm).

Now I'm not lazy or cheating, as I've done the question but not sure if I did it correctly.

Since I wasn't actually given a value for actual size, I assumed the actual size was 4 micrometers.

4 micrometers=4*10^-6 metres
4*10^-6 metres= 4.0*10^-4 centimetres.

Size of image=8.8cm.

Magnification= Size of image/actual size
=8.8cm/4.0*10^-4cm= 22000x
2. (Original post by hamzramz)
A rep is available!!!

OK basically you have to calculate the magnification of the cell.

There is an image of the cell, which has a diameter of 8.8cm and there is a scale bar of 4 micrometers (1.9cm).

Now I'm not lazy or cheating, as I've done the question but not sure if I did it correctly.

Since I wasn't actually given a value for actual size, I assumed the actual size was 4 micrometers.

4 micrometers=4*10^-6 metres
4*10^-6 metres= 4.0*10^-4 centimetres.

Size of image=8.8cm.

Magnification= Size of image/actual size
=8.8cm/4.0*10^-4cm= 22000x
If 4 micrometers is equal to 1.9cm, and the cell is 8.8cm, then:
[8.8/1.9] x 4 x 10-6m = 1.85 x 10^-4m, I believe = 185.26cm
Therefore, your cell size is 185.26cm, and divide it by 4 x 10^-4cm, to get the magnification.

That was a rather rushed attempt though! sorry.
3. (Original post by hamzramz)
A rep is available!!!

OK basically you have to calculate the magnification of the cell.

There is an image of the cell, which has a diameter of 8.8cm and there is a scale bar of 4 micrometers (1.9cm).

Now I'm not lazy or cheating, as I've done the question but not sure if I did it correctly.

Since I wasn't actually given a value for actual size, I assumed the actual size was 4 micrometers.

4 micrometers=4*10^-6 metres
4*10^-6 metres= 4.0*10^-4 centimetres.

Size of image=8.8cm.

Magnification= Size of image/actual size
=8.8cm/4.0*10^-4cm= 22000x
Actual size = 8.8/1.9 x 4 x 10^-5

this gives you the actual size in micrometers

Image size = 8.8 x 10^-5 ( or however you get micrometers, I forget.

Then use IAM so (8.8x10^-5)/(8.8/1.9x4x10^-5)

I think! I can't honestly remember lol.
4. rep to narik n joec thanks for the answer,

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