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In the picture, shown below which ray is incident at the critical angle Ray 1 Ray 2 Normal n2 Ray 3 Rare Medium Ray 4 Dense Medium а. all the rays O b. ray 4 О с. ray 3 d. rays 1,2 & 4

In the picture, shown below which ray is incident at the critical angle Ray 1 Ray 2 Normal n2 Ray 3 Rare Medium Ray 4 Dense Medium а. all the rays O b. ray 4 О с. ray 3 d. rays 1,2 & 4

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In the picture, shown below which ray is incident at the critical angle Ray 1 Ray 2 Normal n2 Ray 3 Rare Medium Ray 4 Dense Medium а. all the rays O b. ray 4 С. ray 3 O d. rays 1,2 & 4
Transcribed Image Text:In the picture, shown below which ray is incident at the critical angle Ray 1 Ray 2 Normal n2 Ray 3 Rare Medium Ray 4 Dense Medium а. all the rays O b. ray 4 С. ray 3 O d. rays 1,2 & 4
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