Your friend Joshua suggests the following hypothesis: \"The fraction of the imag
ID: 1494753 • Letter: Y
Question
Your friend Joshua suggests the following hypothesis: "The fraction of the image that is visible in a plane mirror depends on how much of the mirror is covered." Design an experiment to test Joshua's hypothesis. Avallable equipment: Plane mirrors, object, masking tape, paper, meter stick. Design and describe the experiment that you plan to perform. Remember that your prediction of the outcome of the experiment must follow from the hypothesis you are testing. Then perform the expirement and record the outcome. Explain the outcome using a ray diagram. Discuss whether the outcome agrees or disagrees with the prediction. If it disagrees, how would you convince Joshua that his idea has been disproven?
Explanation / Answer
1. Place the object in front of the mirror.
2. Note the height of the object and height of the mirror
3. Start covering the mirror with paper continuously and measure the height of the image seen.
Outcome
The hypothesis is not true until the the visible portion of the mirror become half the height of the object. That is, if the object height is 20 cm, we can view full image until the visible portion of the mirror is 10 cm. The hypothesis is valid after that condition
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