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The student measured the magnification produced by the lens by measuring the image height in centimetres - AQA - GCSE Physics - Question 3 - 2018 - Paper 1
Question 3
The student measured the magnification produced by the lens by measuring the image height in centimetres. Explain why the image height in centimetres was the same a... show full transcript
Worked Solution & Example Answer:The student measured the magnification produced by the lens by measuring the image height in centimetres - AQA - GCSE Physics - Question 3 - 2018 - Paper 1
Step 1
Explain why the image height in centimetres was the same as the magnification.
Answer
The magnification of a lens is defined as the ratio of the height of the image to the height of the object. When the object height is taken as 1 cm, the formula for magnification becomes:
ext{magnification} = rac{ ext{image height}}{ ext{object height}} = rac{ ext{image height}}{1 ext{ cm}} = ext{image height}.Thus, the image height in centimetres directly represents the magnification value when the object height is 1 cm.