Class 5 Exam > Class 5 Questions > What determines the size of a shadow?a)The co...
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What determines the size of a shadow?
- a)The color of the object blocking the light
- b)The distance between the object and the surface the shadow falls on
- c)The position of the object blocking the light
- d)The distance between the source of light and the object blocking the light
Correct answer is option 'D'. Can you explain this answer?
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What determines the size of a shadow?a)The color of the object blockin...
he size of a shadow depends on the distance between the source of light and the object blocking the light. When the distance is more, the shadow is smaller, and when the distance is less, the shadow is bigger.
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What determines the size of a shadow?a)The color of the object blockin...
Understanding Shadow Size
Shadows are fascinating phenomena that depend on several factors. Among these, the distance between the source of light and the object blocking the light is the most significant factor in determining the size of a shadow. Here's why:
Distance from the Light Source
- The greater the distance between the light source and the object, the larger the shadow will appear.
- This occurs because the light rays spread out as they travel from the source, causing the shadow to expand.
Light Divergence
- Light travels in straight lines and diverges outward as it moves away from its source.
- When the object is closer to the light source, the light rays are more concentrated, resulting in a smaller shadow.
Angle of Light
- The position of the light source affects the angle at which light hits the object.
- A lower angle (like during sunrise or sunset) can create longer shadows, while a higher angle (like noon) results in shorter shadows.
Other Influencing Factors
- While the color of the object (option a) and the distance from the surface (option b) can affect the darkness and clarity of the shadow, they do not significantly impact its size.
- The position of the object (option c) can change the shape of the shadow, but the size primarily hinges on the distance to the light source.
In summary, the distance between the source of light and the object blocking the light is the key determinant of shadow size, making option 'D' the correct answer. Understanding these principles can enhance our appreciation of how light interacts with objects to create shadows.
Shadows are fascinating phenomena that depend on several factors. Among these, the distance between the source of light and the object blocking the light is the most significant factor in determining the size of a shadow. Here's why:
Distance from the Light Source
- The greater the distance between the light source and the object, the larger the shadow will appear.
- This occurs because the light rays spread out as they travel from the source, causing the shadow to expand.
Light Divergence
- Light travels in straight lines and diverges outward as it moves away from its source.
- When the object is closer to the light source, the light rays are more concentrated, resulting in a smaller shadow.
Angle of Light
- The position of the light source affects the angle at which light hits the object.
- A lower angle (like during sunrise or sunset) can create longer shadows, while a higher angle (like noon) results in shorter shadows.
Other Influencing Factors
- While the color of the object (option a) and the distance from the surface (option b) can affect the darkness and clarity of the shadow, they do not significantly impact its size.
- The position of the object (option c) can change the shape of the shadow, but the size primarily hinges on the distance to the light source.
In summary, the distance between the source of light and the object blocking the light is the key determinant of shadow size, making option 'D' the correct answer. Understanding these principles can enhance our appreciation of how light interacts with objects to create shadows.
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What determines the size of a shadow?a)The color of the object blocking the lightb)The distance between the object and the surface the shadow falls onc)The position of the object blocking the lightd)The distance between the source of light and the object blocking the lightCorrect answer is option 'D'. Can you explain this answer?
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