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. An object is placed at a distance 10 cm from a lens of power -4 D .The position of the image is-

Posted by Prince Barua 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Ayush Kashyap 5 years, 1 month ago

F=1/p ,so f=1/-4 Si using formula 1/v-1/u=1/f So v(image distance or position )=-20/7 cm here -ve sign indicates that is concave or diverging lens ,so ans is 20/7cm~~

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