Make the idea your own
- 1Locate the normal before measuring angles.
- 2Change the incident angle and follow the two rays.
- 3Keep the incident angle fixed and increase the material index.
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Class 10 · Physics
Bend a light ray
Interactive explanation Gamified quiz, feedback & rewards
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NCERT chapter connection · Learning goals & preparation
By the end, you can…
- Explain sin r = sin i / n (air ≈ 1)
- Change one input at a time and predict its effect before checking the model.
- Apply the relationship in a quiz and explain the reasoning behind your answer.
Useful preparation: Units, measurement and proportional reasoning.
Science · Light – Reflection and Refraction
NCERT Science · reprint 2025–26. This activity explores part of the chapter; it does not replace the textbook. Open official NCERT reference ↗
Hands-on explainer · Class 10
Bend a light ray
Class 10
CLASS 10 · CONCEPT QUEST
Turn understanding into a small adventureBend a light ray
Discover the rule, predict what happens, then solve a hands-on mission.
DiscoverFind the idea→PredictThink it through→BuildMake it click
3 rounds · no timer · up to 100 XP for your best result
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The relationshipsin r = sin i / n (air ≈ 1)
Explain the experiment
When the goal is met: The refracted angle is about 35.3°, smaller than the 60° incident angle: the ray bends towards the normal.