The depth of water in a bucket is 40 cm but its bottom appears to be raised by 10 cm. What is the refractive index of water ?
The real depth of water in bucket is 40 cmThe apparent depth of water in bucket is 40 - 10 = 30 cm
refractiveindex=actualdepthapparentdepth
refractiveindex=dactualdapparent=4030=43μ=43