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Direct and Inverse Proportion

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Question 12

85%

The intensity of light, $L$ , from a source is inversely proportional to the square of the distance, $d\,$ m, from the source.

$L\,$ is given by the formula: $L=200d2\displaystyle L = \frac{200}{d^2}$

Find the light intensity when the distance is 5 m.

[2]

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Direct and Inverse Proportion Questions

GCSE
Maths
Direct and Inverse Proportion

189 exam-style questions on OCR GCSE Maths Direct and Inverse Proportion. Each one has a worked solution and a mark scheme showing where the marks go.

Direct and Inverse Proportion

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Direct and Inverse Proportion

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Question 12

85%

The intensity of light, $L$ , from a source is inversely proportional to the square of the distance, $d\,$ m, from the source.

$L\,$ is given by the formula: $L=200d2\displaystyle L = \frac{200}{d^2}$

Find the light intensity when the distance is 5 m.

[2]

Video walkthrough

Direct and Inverse Proportion Questions

GCSE
Maths
Direct and Inverse Proportion

189 exam-style questions on OCR GCSE Maths Direct and Inverse Proportion. Each one has a worked solution and a mark scheme showing where the marks go.