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CBSE Class 10 Answered

Pls answer my question 
question image
Asked by rushabhjain.avv | 10 Mar, 2019, 08:12: AM
answered-by-expert Expert Answer
As we know in plane mirror distance of image and object from the mirror is equal 
So in first case the image will form at 20 cm from mirror 
Now when mirror is moved towards object the new distance between object and mirror is 18 cm so the image will form at 18 cm from mirror
Total change in image distance  = 20×2 - 18×2 = 40-36= 4cm
Answered by Ankit K | 10 Mar, 2019, 11:20: AM

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