Asked by rk
an object of 1 cm^2 face area is placed at a distance of 1.5m from a screen. How far from the object should a concave mirror be placed si that it forms 4 cn^2 image on the screen?
Answers
Answered by
bobpursley
size is proportionalto distance sqkuared
4/1=(distance/1.5)^2
4/1=(distance/1.5)^2
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