A ray of light travelling in medium P (μ=1.75) enters medium Q (μ=1.5). (a) Will the ray of light bend towards or away from the normal?
(b) Calculate the speed of light in medium Q, if the speed of the light in vacuum is 3X108m/s

b.

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the answer would most likely be c, because if it's a comical piece of information, it may likely not be true, if it's a site that allows anybody to edit the content, it could mean a five year old is typing the info, and if it's a tv show produced by a celeb, it may have a biased opinion.

energy can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical means. do not understand what you are asking but hope this