Podcast
Questions and Answers
What happens to a ray of light when it travels from one transparent medium into another?
What happens to a ray of light when it travels from one transparent medium into another?
When observing a pencil placed in water, it appears straight without any bending.
When observing a pencil placed in water, it appears straight without any bending.
False
Define refraction of light.
Define refraction of light.
Refraction of light is the change of direction of light rays when they pass from one transparent medium to another.
The light rays from the submerged pencil bend due to __________ when they pass from water to air.
The light rays from the submerged pencil bend due to __________ when they pass from water to air.
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Match the items with their description related to the activity demonstrating refraction:
Match the items with their description related to the activity demonstrating refraction:
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What is observed when tracing the refracted ray from the pointed tip of the submerged pencil backwards?
What is observed when tracing the refracted ray from the pointed tip of the submerged pencil backwards?
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The pencil does not appear to be affected by the water when viewed from the side of the beaker.
The pencil does not appear to be affected by the water when viewed from the side of the beaker.
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Study Notes
Refraction of Light
- Refraction of light is the change in direction of a light ray as it passes from one transparent medium to another.
Demonstration Activity
- Objective: Demonstrate refraction.
- Materials: Beaker, pencil, water.
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Procedure:
- Place a pencil in an empty beaker.
- Fill the beaker with water ¾ full.
- Observe the pencil from the side of the beaker.
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Observation:
- The pencil appears bent at the water's surface.
- This is due to light rays bending as they enter air from water.
- Tracing the refracted ray backwards, it seems to originate from a different point in the water.
- This creates a virtual image of the submerged part of the pencil.
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Description
This quiz explores the concept of refraction of light and includes a hands-on demonstration. Participants will use simple materials like a beaker, pencil, and water to observe how light changes direction when entering different media. It highlights the phenomenon of light bending and the creation of a virtual image.
