1.

If f is focal length and v is image distance for spherical mirror, then beteral magnification m = …....

Answer»

`(F)/(f+v)`
`(f)/(f-v)`
`(f+v)/(f)`
`(f-v)/(f)`

Solution :For SPHERICAL mirror,
`1/f=1/u+1/v IMPLIES 1/u=1/f-1/v`
`implies 1/u=(v-f)/(FV)`
`THEREFORE v/u=(v-f)/(f)" "therefore m=-((v-f)/(f))=(f-v)/(f)`


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