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    Ignore the working out I have done as it is incorrect but can anyone help me with answering this question? Thankyou

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    first of all, write out what you're given.
    1) it goes from oil to water.
    2)the i = 44, r = ?
    3) the n of oil is 1.47 and the n of water is 1,33
    4) write out an equation. in this case it's n1sini = n2sinr

    so whats what... oil is 1.47 and i is 44 degrees; because it goes from oil to water,
    its 1.47Sin(44) = 1.33Sin(?)
    Sin(?)= 1.47Sin(44)
    1.33 = sin(inverse) 0.7677803042 which = 50.1

    (also the n of air isn't important as the light is travailing through oil)

    P.S physics is hard but like maths it becomes easy if you work away at it
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