An object is placed at thw distance of 40cm away from a concave mirror and image form 5/4 of magnification . at what diatance object is place to form 3/4 magnification .find the two possible length of image
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ExplanaSince focal length of concave mirror given is 20cm l. Object is at 40cm distance which means it is at centre of curvature. hence, image will be formed of same size and at centre focus only but real and invertedtion:
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