Question Detail

PHY 104 Reflection and Refraction of Light Objective Question
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Question

For a woman 1.60 m tall with her eyes 10 cm below the top of her head, what is the minimum height a full-length plane mirror must be for her to see her entire body, and how high must its lower edge be from the floor?
Options
A Mirror height: 0.80 m, Lower edge from floor: 0.75 m
Correct Answer
B Mirror height: 1.60 m, Lower edge from floor: 0 m
C Mirror height: 0.75 m, Lower edge from floor: 0.80 m
D Mirror height: 0.90 m, Lower edge from floor: 0.70 m
Correct Answer

Option A is the correct answer.

Detailed Explanation

Page 16 provides the solution to Example 32-2: 'Geometry then shows that the mirror must be 80 cm high, with its bottom 75 cm off the floor.' Converting to meters, this is 0.80 m high and 0.75 m off the floor.

Hint

Look for the solution to Example 32-2 on page 16. Remember to convert centimeters to meters if necessary.

Question Info

Course: PHY 104
Topic: Reflection and Refraction of Light
Type: Objective
Difficulty: Not specified
Question 33 of 947
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