A glass slab of thickness 4 cm contains the same number of waves as 5 cm of water
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1
Answer:
What is the question?........
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0
Answer:
5/3
Explanation:
Thickness of the glass slab (tg) = 4cm
refractive index (nw) = 4/3
thickness of water (tw) = 5cm
nw *tw=ng*tg
4/3 * 5 = ng*4
ng = 5/3
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