engineering recuitment BPSC AE Mock Test 2025 Physics Electromagnetic Waves Polarization by Reflection

If the refractive index of glass is 1.5, the speed of light in glass is

1
2.3 × 108 m/s
2
3.0 × 108​ m/s
3
1.5 × 108​ m/s
4
2.0 × 108​ m/s
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