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ICSE Class 10 Physics 2013 Solved Paper

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Question : 16
Total: 70
The refractive index of glass with respect to air is 1.5. What is the value of the refractive index of air with respect to glass?
Solution:  
‌‌aµg=‌
1
‌gµa
‌‌gµa=‌
1
‌aµg
=‌
1
1.5
=‌
10
15
‌‌gµa=‌
2
3
=0.667
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