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CBSE Class 10 Science Question 45 of 60

Solved 2022 Term 1 Question Paper CBSE Class 10 Science — Question 21

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Question 45

In the diagram shown below n1, n2 and n3 are refractive indices of the media 1, 2 and 3 respectively. Which one of the following is true in this case?

In the diagram shown below n1, n2 and n3 are refractive indices of the media 1, 2 and 3 respectively. Which one of the following is true in this case? CBSE 2022 Term 1 Science Class 10 Question Paper Solved.
  1. n1 = n2
  2. n1 > n2
  3. n2 > n3
  4. n3 > n1
Answer

n3 > n1

Reason — According to the figure, the light ray bends towards the normal when it passes from medium 1 to medium 2 and then it bends further when it passes from medium 2 to 3. We know, ray of lights bends towards the normal when it passes from rarer to denser medium hence medium 3 is denser than medium 1 i.e., n3 > n1.