Ray Optics -Reflection from the spherical mirror using a concave mirror

Ray Optics -Reflection from the spherical mirror using a concave mirror

$in\, \Delta \, AFM$

$tan\, 2i\, \, =\, \frac {AM} {FM}\, \approx \frac {AM} {PF}$

$\, 2i\, \, =\, \frac {AM} {PF}\, \, (2i\, is\, small)$

$\, i\, \, =\, \frac {AM} {2PF}\, \, --------eq(1)$

$in\, \Delta \, ACM$

$tan\, i\, \, =\, \frac {AM} {MC}\, \approx \frac {AM} {PC}$

$\, i\, \, =\, \frac {AM} {PC}\, --------eq(2)$

$from\, eq(1)\, \, and\, eq(2)$

$\, \, \frac {AM} {2PF}\, \, =\frac {AM} {PC}$

$2PF=PC$

$"2f\,$

Post By : Preeti Rai 19 Nov, 2019 1925 views Physics Ray Optics