When an object placed between the pole and focus of a concave mirror the image formed is ------

Options

A. a. real, inverted and small
B. b. real, inverted and same size
C. c. Virtual, inverted and small
D. d. Virtual, erect and enlarged

Explanation

d. For a concave mirror, f `lt 0 , u lt 0.`
For an object between pole and the focus, f `lt u lt ` 0
i.e., `(1)/(f) - (1)/(u) gt 0 " " i.e., (1)/(v) lt 0 `
Hence v is positive and lies to the right of the pole and so the image is virtual .
m = `(-v)/(u ) = (v)/(|u|) " since" (1)/(v) lt (1)/(|u|) , v gt |u|` . ,
Hence .m. is positive and `gt` 1. so the image is enlarged.