Which of the following solid substance(s) will have the same refractive index when measured in different directions?

Rubber

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N a C l

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Plastic

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Graphite

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Solution

The correct option is A $N a C l$
Isotropic solids have same refractive index in all the directions. As amorphous solids are isotropic in nature. Hence, amorphous solids like $N a C l$ will show same refractive index when measured in different directions.

Hence, the correct option is $B$

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Which of the following solid substance(s) will have the same refractive index when measured in different directions?

The correct option is A NaClIsotropic solids have same refractive index in all the directions. As amorphous solids are isotropic in nature. Hence, amorphous solids likeNaCl will show same refractive index when measured in different directions.Hence, the correct option is B

The correct option is A $N a C l$
Isotropic solids have same refractive index in all the directions. As amorphous solids are isotropic in nature. Hence, amorphous solids like $N a C l$ will show same refractive index when measured in different directions.

Hence, the correct option is $B$