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Object is placed at a distance of 4cm from focus of concave mirror.Then image is formed at a distance of 16cm from focus on Same side.What is focal length of mirror??

Answer» TION:u = -4cmv = -16cm 1/f = 1/v+1/u1/f = 1/-16+ 1/-41/f = -3/ 16 ( by taking LCM)f =- 16/3 Focal length is 5.33cm


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