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a dentists uses a mirror infront of a decayed tooth at a distance of 4 cm from the tooth to get a 4 times magnified image.use mirror formula to find focal length and nature of the mirror. what is the nature of the object |
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Answer» m=v/u 4=4/u u=1 1/f=1/v-1/u 1/f=1/4_1/1 1/f=-3/4 f=-4/3 |
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