The image width of a plant cell is 50 mm. The real width of the cell is 0.2 mm. Calculate the magnification of the cell.

A microscope shows an image of a bacterium with a width of 30 mm. The real width of the bacterium is 0.03 mm. Calculate the magnification.

The image of a pollen grain under the microscope measures 60 mm. The actual size of the pollen grain is 0.15 mm. Calculate the magnification.

The image size of a blood cell is 25 mm, and the real size is 0.005 mm. What is the magnification?

The real size of a chloroplast is 0.01 mm, and its image size is 70 mm. Calculate the magnification.

The image size of a nerve cell under the microscope is 120 mm, while its actual size is 0.6 mm. Calculate the magnification.

A hair follicle image is 85 mm wide, and the actual width of the follicle is 0.425 mm. What is the magnification?

The actual size of a virus is 0.0001 mm, and its image size under the microscope is 20 mm. Calculate the magnification.

The image of a muscle fiber is 15 mm, and the real size is 0.05 mm. Find the magnification.

A bacterial cell has an image size of 10 mm, and the real size is 0.01 mm. What is the magnification?

The magnification of a fly's wing in the image above is ×150.
There are 1000 micrometres (μm) in a millimetre (mm).
In the image, the length of the wing appears to be 30 mm.
Calculate the real length of the wing.
Give your answer in micrometres (μm).

The magnification of the plant leaf in the image above is ×75.
There are 1000 micrometres (μm) in a millimetre (mm).
The leaf appears 40 mm long in the image.
Calculate the real length of the leaf.
Give your answer in micrometres (μm).

The magnification of a muscle fibre in the image is ×500.
There are 1000 micrometres (μm) in a millimetre (mm).
The muscle fibre appears 25 mm long in the image.
Calculate the real length of the muscle fibre.
Give your answer in micrometres (μm).

The magnification of a bacterial cell in the image above is ×1000.
There are 1000 micrometres (μm) in a millimetre (mm).
The bacterial cell appears 10 mm long in the image.
Calculate the real length of the bacterial cell.
Give your answer in micrometres (μm).


The magnification of a pollen grain in the image above is ×250.
There are 1000 micrometres (μm) in a millimetre (mm).
The pollen grain appears 12 mm in diameter in the image.
Calculate the real diameter of the pollen grain.
Give your answer in micrometres (μm).