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Sunita prepares some equipment for a class practical - Edexcel - GCSE Physics - Question 2 - 2012 - Paper 1
Question 2
Sunita prepares some equipment for a class practical. She measures the focal length of different lenses. She uses a metre rule, some white card and the light from a... show full transcript
Worked Solution & Example Answer:Sunita prepares some equipment for a class practical - Edexcel - GCSE Physics - Question 2 - 2012 - Paper 1
Step 1
Describe how she could measure the focal length of a lens using this equipment.
Answer
To measure the focal length of a lens, Sunita can use the following steps:
- Setup: Place the lens on a flat surface in front of the white card, ensuring it is stable.
- Shine Light: Direct the light from the distant window through the lens and onto the white card.
- Adjust Position: Move the card closer or further away from the lens until a clear image of the distant light source is projected on the card.
- Measure Distance: Measure the distance from the lens to the sharp image on the card using the metre rule. This distance is the focal length of the lens.
Step 3