Question

A girl with a face 5 cm wide stands 2 m from a plane mirror. Where is her image formed? How wide is the image of her face? If she walks towards mirror at 2 m/s, at what speed does her image approach her?​

Answer 1

Answer:

The image will form 2 m behind the mirror and the width of the image of boy's mouth will be 5 cm.

Answer 2

Her image will form 2m behind the mirror.

In image her face will be 5cm wide.

The speed by which her image will approach her will be 2m/s.

Because, I plane mirror.

Image height/width = Object height/width

and

Image distance = Object distance

and

Speed of Object = speed of image

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