Question

drive the mirror formula for concave spherical mirror for concave virtual image

I want full derivation with diagram so plz help me ❤️

Hurry!!!!!!!☺️​

Answer 1

Consider the D A1CB1 and D ACB

[when two angles of D A1CB1 and D ACB are equal then the third angle

But ED = AB

From equations (1) and (2)

If D is very close to P then EF = PF

But PC = R, PB = u, PB1 = v, PF = f

By sign convention

PC = -R, PB = -u, PF = -f and PB1 = -v

Equation (3) can be written as

Dividing equation (4) throughout by uvf we get

Equation (5) gives the mirror formula

Answer 2

check ur answer............