two plane mirror `L_(1) and L_(2)` are parallel to each other and 3m apart. A person standing
Channel: Doubtnut
Date: 05/07/2020

two plane mirror `L_(1) and L_(2)` are parallel to each other and 3m apart. A person standing x m from the right mirror `L_(2)` looks into this mirror and sees a series of images, The distance between the first and second image is 4 m. Then, the value of x is