Printable worksheet ยท 2 of 4
An opaque object blocks light - Paper 2
Read the information, then answer the questions. An adult may read the instructions aloud. Show your working where asked.
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Invented small-source shadow record: source and screen stay fixed 60 cm apart; the same opaque card keeps the same orientation. Source-to-card distance 12 cm gives shadow width 25 cm; distance 30 cm gives width 10 cm. Values are a simplified model, not guaranteed measurements. Use the record, not a Sun or laser experiment.
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