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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.
What is a Newton meter? A unit of energy also called a Joule. When a force of 1 Newton is applied on an object for a distance of 1 meter then 1 Joule of energy is used. It is t
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A pure semiconductor under ordinary conditions behaves like (A) A conductor. (B) An insulator. (C) A magnetic material. (D) A ferro-electric material. A
what is different between acid and base?
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A chemical reaction is known to occur spontaneously under standard conditions. Which of the following statements is/are true (more than one answer may be selected): A The to
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