Question

juana's father takes her to an optician. She is made to sit in front of a plane mirror which is at a distance of 3.5 m from her . A chart is placed 50 cm behind her head and she can see the image of a chart how far away from her eyes the chart appears to her?

a) 3.8 m
b) 6.0m
c) 1.8 m
d) 9.3 m​

Answer 1

Answer:

b 6.0m is the correct answer maybe I(I just picked it)

Answer 2

Given: The distance of the plane mirror from Juana $=3.5m$

         The distance of the chart that is placed behind her head $=50cm=0.5m$

To find: The distance of the image of the chart from her eyes.

Solution:

It is given to us that,

The distance between the plane mirror and Juana $=3.5m$

The distance between the chart and Juana that is placed behind her head $=0.5m$

∴ Distance between the chart and the mirror $=3.5m+0.5m=4m$

To calculate the distance between Juana and the image of the chart, we need to sum up the distance between the chart and the mirror and the distance between the plane mirror and Juana.

= Distance between Juana and plane mirror + Distance between the chart and the mirror

$=3.5+4.0$

$=7.5m$

Final answer:

None of the given options match the answer to the question.