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When Light Travelling in Air Passes into a Sheet of Glass,it

Question 72

Multiple Choice

When light travelling in air passes into a sheet of glass,it is observed to change in wavelength to 58% of its wavelength in air.What is the speed of light in the glass?


A) 5.2 ×\times 108 m/s
B) 1.7 ×\times 108 m/s
C) 3.0 ×\times 108 m/s
D) 2.3 ×\times 108 m/s

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