1)The linear magnification of a convex mirror of focal length 15 cm is 1/3. What is the distance of the object from the focus of the mirror? 2)1. The refractive index of glycerine is 1.46. What is the speed of light in air if its speed in glycerine is 2.05 x 108 m/s? 3. What is the real depth of a swimming pool when its bottom appears to be raised by 1m? Given refractive index of water is4/3. 4. A jar 15cm long is filled with a transparent liquid. When viewed from the top, its bottom appears to be 12 cm below. What is the refractive index of the liquid? 5. A converging mirror of focal length 20 cm forms an image, which is two times the size of the object. Calculate two possible distances of the object from the mirror.
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I don't know how to answer this question I'am so sorry
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