Practice Numericals - 4.7 | 4. Refraction of Light at Plane Surfaces | ICSE Class 10 Physics
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4.7 - Numericals

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

Calculate the refractive index if the angle of incidence is 60Β° and the angle of refraction is 30Β°.

πŸ’‘ Hint: Use the formula ΞΌ = sin(i) / sin(r).

Question 2

Easy

If the refractive index of a medium is 1.5 and the angle of incidence is 45Β°, what is the angle of refraction?

πŸ’‘ Hint: Rearrange the refractive index formula to find the angle of refraction.

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Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the formula to calculate the refractive index?

  • n = sin(i) + sin(r)
  • n = sin(i) / sin(r)
  • n = sin(r) - sin(i)

πŸ’‘ Hint: Think about how you can express the relationship between these angles.

Question 2

True or False: A higher refractive index results in light bending more.

  • True
  • False

πŸ’‘ Hint: Recall how refraction changes when light enters a denser medium.

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Challenge Problems

Push your limits with challenges.

Question 1

Light travels from air (n=1) into a diamond (n=2.42); calculate the angle of refraction if the angle of incidence is 40Β°.

πŸ’‘ Hint: Rearrange Snell's Law to isolate sin(r) and calculate.

Question 2

A ray of light enters a liquid from air at an angle of 50Β°, where the refractive index of the liquid is 1.5. Find the angle of refraction.

πŸ’‘ Hint: Apply the laws systematically and simplify before calculations!

Challenge and get performance evaluation