Question
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Solving time: 2 mins
If we put a cardboard (say 20 cm × 20 cm) between a light source and our eyes, we can't see the light. But when we put the same cardboard between a sound source and our ear, we hear the sound almost clearly. Explain.
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Light waves have the property of travelling in a straight line, unlike sound waves. When we put a cardboard between the light source and our eyes, the light waves are obstructed by the cardboard and cannot reach our eyes, which doesn't happen when the cardboard is inserted between sound source and our ear.
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Question Text | If we put a cardboard (say 20 cm × 20 cm) between a light source and our eyes, we can't see the light. But when we put the same cardboard between a sound source and our ear, we hear the sound almost clearly. Explain. |
Updated On | Sep 28, 2022 |
Topic | Wave Optics |
Subject | Physics |
Class | Class 12 |
Answer Type | Text solution:1 Video solution: 2 |
Upvotes | 326 |
Avg. Video Duration | 3 min |