The diagrams show rays of light passing through two lenses labelled M and N - Edexcel - GCSE Physics - Question 2 - 2013 - Paper 1
Question 2
The diagrams show rays of light passing through two lenses labelled M and N.
(i) Complete the sentence by putting a cross (✗) in the box next to your answer.
The li... show full transcript
Worked Solution & Example Answer:The diagrams show rays of light passing through two lenses labelled M and N - Edexcel - GCSE Physics - Question 2 - 2013 - Paper 1
Step 1
Complete the sentence by putting a cross (✗) in the box next to your answer.
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Answer
The correct answer is D: refraction. Refraction is the change in direction of light as it passes through different mediums, such as lenses.
Step 2
Calculate the power of lens M.
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Answer
The power (P) of a lens is calculated using the formula:
P=f1
where:
P is the power in diopters (D), and
f is the focal length in meters.
Given that the focal length of lens M is 2 m, substitute into the formula:
