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Light is shined into a glass rod. To guarantee the total internal reflection (TIR) happens to all the possible rays, what is the minimum index of refraction n for the glass?
Hint: To make sure all rays TIR inside the rod, you just need to consider an extreme case, i.e., the incident angle q1 (on the top surface of glass rod) equals to 90o.
how do higher energy levels in our xray beam affect the photoelectric effect
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when a billard ball hits another billarid ball then other ball is maving but striking ball also move some distance why
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