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The lens shown in the diagram has a focal length of 12.0 cm - Edexcel - GCSE Physics - Question 1 - 2014 - Paper 1

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The lens shown in the diagram has a focal length of 12.0 cm. (a) Complete the sentences by putting a cross (X) in the box next to your answer. (i) This lens can prod... show full transcript

Worked Solution & Example Answer:The lens shown in the diagram has a focal length of 12.0 cm - Edexcel - GCSE Physics - Question 1 - 2014 - Paper 1

Step 1

This lens can produce

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Answer

The correct answer is D: both real and virtual images. A converging lens, like the one depicted, can create both real images (when the object is placed outside the focal length) and virtual images (when the object is within the focal length).

Step 2

The power of the lens is

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Answer

To calculate the power of the lens, we use the formula for power, which is given as:

P = rac{1}{f}

where ff is the focal length in meters. Since the focal length is given as 12.0 cm, we convert this to meters:

f=12.0extcm=0.12extmf = 12.0 ext{ cm} = 0.12 ext{ m}

Substituting this value into the power formula:

P = rac{1}{0.12} ext{ m} = 8.33 ext{ dioptre}

Thus, rounding to one decimal, the answer is B: 8.3 x 10^1 dioptre.

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