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3. A student is asked to investigate the variation of light intensity with the thickness of glass,
given the following apparatus. Each glass slide is covered with automotive tint.
List of apparatus:
• Glass slides 5 inches x 5 inches
• Light intensity meter
• Light source
• Meter rule
• Matt black card
• Micrometer screw gauge
Design an experiment to investigate the variation of light intensity with the thickness of
glass. Write your answers under the following headings.
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(a) Identification of variables
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[3 marks]
(b) Set up of apparatus
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[3 marks]
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