Question

in concave mirror v=60 u=30 find focus​

Answer 1

Answer:

mirror formula = 1/v + 1/u = 1/f

=》1/60 +1 /30 = 1/f

=》3/60 = 1/f

=》1/20 = 1/f

=》f = 20.

Hope this is helpful for you.