OCR General Certificate of Secondary Education (GCSE) Biology Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the OCR GCSE Biology Exam with our comprehensive study resources. Practice with quizzes, flashcards, and detailed explanations to enhance your understanding. Ace your exam and secure your academic success!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is the formula used to calculate magnification?

Real size/image size
Image size/real size
Image size + real size
Real size + image size

The correct answer is: Image size/real size

The formula used to calculate magnification is the ratio of the image size to the real size. This means that you determine how many times larger the image appears compared to the object’s actual size. When calculating magnification, such as when using a microscope or a magnifying lens, you measure the size of the image produced and divide that by the true size of the object being viewed. This method allows for a clear understanding of how much larger the image is as compared to the object. By using this formula, one can effectively quantify the increase in visibility that magnification provides. Consequently, this is why the formula image size divided by real size is the correct choice.