Question

A Chlorella cell viewed through a microscope is 0.00005 m wide when the magnification is 2000.
What is the actual size of the cell?

Answer 1

Answer:

0.0025micrometer.

Explanation:

To calculate the actual size of the image, the formula to be used is

Actual size=Image size÷magnification.

The image size is 0.00005 wide

Magnification is 2000

First, convert the image size to micrometer.

=0.00005 × 1000000

50micrometers.

Actual size= 50÷2000

Actual size = 0.0025

Answer 2

The actual size of the cell will be

"0.0025".

Magnification

According to the question,

Image size = 0.00005 or,

                  = 0.00005 × 1000000

                  = 50 micrometers

Magnification = 2000

We know the relation,

→ Actual size = $\frac{Image \ size}{Magnification}$

By substituting the above values,

                      = $\frac{50}{2000}$

                      = 0.0025  

Thus the above answer is appropriate.

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