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  • An object is kept 40 cm in front of a concave mirror of focal length 20 cm. Find the position and nature of the image. Draw a ray diagram to show the formation of image in this case.    </di

An object is kept 40 cm in front of a concave mirror of focal length 20 cm. Find the position and nature of the image. Draw a ray diagram to show the formation of image in this case.

 

 

 

 
 
 
 
 

Answers (1)

u = -40, \quad f = -20 \quad v = ?

Use mirror formula

\frac{1}{u} + \frac{1}{v} = \frac{1}{f}

\frac{-1}{40} + \frac{1}{v} = \frac{-1}{20}

v = - 40 cm \quad [\text{In front of concave mirror}]

Nature - Real and inverted

Posted by

Sumit Saini

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