Two Placed at M(1) and M(2) meter away...

Two Placed at `M_(1)` and `M_(2)` meter away from `M_(1)` and `M_(2)` respectively. The shortest distance between the images thus formed is : (Take `sqrt(5)` = 2.3)

`2sqrt(10)` a

`2.3a`

`3a`

`4.6a`

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