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an object is placed 20cm in front of a place mirror the mirror is moved to set two words the object the distance between the position of the original and final image seen in the mirror .(a) 2 cm (b) 4 cm (c)10 cm (d)22 CM. Which option is correct

Posted by Suhani Guleria 5 years, 5 months ago

CBSE > Class 10 > Science

1 answers

Lovesh Baswani 5 years, 5 months ago

Initially, the object is placed 20 cm in front of mirror. So the image will form 20 cm behind the mirror. If mirror is moved 2 cm towards the object, distance between object and mirror = 20 cm – 2 cm = 18 cm distance between mirror and image = 18 cm, which is 2 cm less than the initial case. Since, the mirror has also moved 2 cm away from the position of original image, so the total distance between the positions of the original and final images is 2 cm + 2 cm = 4 cmRead more on Sarthaks.com - https://www.sarthaks.com/131305/an-object-is-placed-20-cm-in-front-of-a-plane-mirror-the-mirror-is-moved-cm-towards-the-object

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