Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Physics Wave

Which of the following is true for Snell's law?

1

sin i / sin r = constant

2

cos i / sin i = constant

3

cos i / cos r = constant

4

More than one of the above

5

None of the above

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