A jeweler can distinguish between a diamond and a piece of glass by observing the critical angle
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The critical angle of a material can be calculated using this equation:
refractive index = 1/sin c ...
Calculate the refractive index for water, which has a critical angle of 49°.
Step 1: Calculate sin c. ...
Step 2: Substitute the value of sin c into the equation. ...
Step 1: Change the subject of the equation to find c.
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