The **magnification** can be calculated if you know the** actual size** of the object and its** image size**.

## Demo

In this tutorial you will learn how to calculate the **magnification** of objects in given examples.

**Note-**Some mobile devices may require you to tap full screen during playback to view video content.

The equation is written like this:

**Magnification = image height / object height**

## Chilled practice question

Copy out the question and attempt to calculate the answer before watching the solution. Write down the equation and show all of your working, remember to add the units to your answer, this routine will guarantee you maximum marks in an exam. Mark your solution and correct if needed.

Calculate an objects **magnification** if the **image height** is 70 **mm** and the **object height **is 28 **mm**.

## Frozen practice question

Copy out the question and attempt to calculate the answer before watching the solution. Write down the equation and show all of your working, remember to add the units to your answer, this routine will guarantee you maximum marks in an exam. Mark your solution and correct if needed.

Calculate the **image height** if an object height is 25 **mm** and the **magnification** is 3.5.

## Science in context

The **magnification** can be calculated if you know the **actual size** of the object and its **image size**.