CAPE Physics Unit 1 · 2007 (Specimen) · Paper 1 · Question Q19
For light passing from air to Material X, the refractive index is 1.3 and for light passing from air to Material Y, the refraction index is 1.5. Which of the following shows the speed of light in air, X and Y in descending order of magnitude? (fastest to slowest)
- (A)air, X, Y
- (B)air, Y, X
- (C)Y, air, X
- (D)X, Y, air
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