If Jo's face is 35.1 cm in front of a concave shaving mirror creating an upright image 1.3 times as large as the object, what is the mirror's focal length (in cm)?
Applications Of Reflection Of Light
When a light ray (termed as the incident ray) hits a surface and bounces back (forms a reflected ray), the process of reflection of light has taken place.
Sign Convention for Mirrors
A mirror is made of glass that is coated with a metal amalgam on one side due to which the light ray incident on the surface undergoes reflection and not refraction.
If Jo's face is 35.1 cm in front of a concave shaving mirror creating an upright image 1.3 times as large as the object, what is the mirror's focal length (in cm)?
Scenario - Jo' shaving mirror creates his magnified image, when his face is at a certain distance from the mirror.
Given :
Object distance
Magnification
From formula of magnification
Putting given values in accordance to sign convention,
So, by mirror formula we calculate focal length as
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