A real inverted image in a concave mirror represented by graph (u, v, f are coordinates)

Options

A.
B.
C.
D.

Answer

A

Explanation

For real inverted image formed by concave mirror
`v=-ve,u=-ve , f=-ve`
`implies(u)/(f)&(v)/(f)` are positive
implies `A` is right answer.
Alternative
`(1)/(v)+(1)/(u)=(1)/(f)`
`implies(1)/(v//f)+(1)/(u//f)=1 implies (1)/(y)+(1)/(x)=1`
`impliesxy=x+y`
`impliesxy-x-y+1=1 implies (x-1)(y-10=1` , Hence `(A)`