Question

11. Write lens formula and mirror formula with the meaning of each term involved.​

Answer 1

$\huge{\mathfrak{\red{\underline{\underline{Answer:-}}}}}$

$\bf{\blue{\underline{Mirror\;Formula:-}}}$

$\sf{\dfrac{1}{f}=\dfrac{1}{v}+\dfrac{1}{u}}$

$\bf{\blue{\underline{Lens\;Formula:-}}}$

$\sf{\dfrac{1}{f}=\dfrac{1}{v}-\dfrac{1}{u}}$

$\sf{Where,}$

$\sf{f=Focal\;Length}$

$\sf{v=image\;distance}$

$\sf{u=object\;distance}$

Answer 2

                    LENS FORMULA

                         1/v - 1/u= 1/f

where, v= distance of image form optical centre

            u= distance of  object form optical centre

           f= focal length of the lens

         

                 MIRROR FORMULA

                     1/u + 1/v= 1/f

where, u= object distance

            v= image distance

            f= focal length