An insect is sitting at a distance of 80cm in front of a plane mirror. If it moves 0.20m towards the mirror then what will be the distance of the insect from its image now?
A
0.2m
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B
1m
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C
0.8m
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D
1.2m
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Solution
The correct option is D1.2m Image of the insect will also move 0.2 m towards the mirror because in plane mirror distance of object and image from mirror remains same.
New distance between insect and its image will be 1.6−0.4=1.2m