Question

Assertion (A): 1.33 is the absolute refractive index of water. Reason (R): Air is optically denser than water.

1 point

a) Both A and R are true and R is the correct explanation of A

b) Both A and R are true but R is not the correct explanation of A

c) A is true but R is false

d) A is false but R is tru


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Answer 1

Explanation:

c) A is true but R is false

Answer 2

The correct option is c) A is true but R is false.

• Refractive index is the ratio of the speed of light in the vacuum to that of light in the respective medium.
• The Refractive index of vacuum is taken 1.
• The refractive index represents whether the material is denser or lighter. A higher refractive index suggests a higher density of the medium.
• The value of the refractive index of water is 1.333. Thus, the assertion statement is correct.
• The density of air is less in comparison to water. Therefore, air is optically less dense than water. Hence, the reason statement is wrong.