Question

deduce the expression m=f/f-u for a spherical mirror​

Answer 1

Answer:

1/f= 1/u+1/v

multiplying with u =>

u/f= 1+u/v

m=-v/u Sub in eqn

u/f-1=-1/m

Solve & u get the ans:

Step-by-step explanation:

(1/v) + (1/u) = (1/f)

(1/v) = (1/f) - (1/u) = ((u-f)/f)

multiply throughout by -u and take reciprocal

-(v/u) = (f/(f-u))

that is magnification

i

Answer 2

Answer:

(1/v) + (1/u) = (1/f)

(1/v) = (1/f) - (1/u) = ((u-f)/f)

multiply throughout by -u and take reciprocal

-(v/u) = (f/(f-u))

Step-by-step explanation:

thats it

XW06 K-11