Question

The relation between u and v for a spherical mirror is v =4u. Find magnification​

Answer 1

Answer:

For a spherical mirror,

u is distance of object from pole,

v is distance of image from pole.

f is focal length of mirror.

From mirror formula

1

​  

+  

u

1

​  

=  

f

1

​  

 

uv

u+v

​  

=  

f

1

​  

 

So, f=  

u+v

uv

​  

 

and since  r=2f=  

u+v

2uv

​