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What causes the images to appear upside down in a pinhole camera?
- a)The light is bent by a lens
- b)The small size of the pinhole
- c)The light travels in straight lines
- d)The camera is not properly aligned
Correct answer is option 'C'. Can you explain this answer?
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What causes the images to appear upside down in a pinhole camera?a)The...
Images appear upside down in a pinhole camera because light travels in straight lines. When light passes through the small pinhole, it projects an inverted image on the screen inside the camera. This happens because the light rays from the top of the object travel through the pinhole and end up at the bottom of the image, and vice versa.
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What causes the images to appear upside down in a pinhole camera?a)The...
Understanding the Pinhole Camera
A pinhole camera is a simple type of camera that operates without a lens, using only a small opening (the pinhole) to let light in. The unique characteristic of images produced by a pinhole camera is that they appear upside down. Let's explore why this happens.
Light Travels in Straight Lines
- The primary reason images appear upside down in a pinhole camera is that light travels in straight lines.
- When light rays from an object pass through the pinhole, they cross over each other.
- For example, light from the top of an object travels downwards to the bottom of the image plane, and light from the bottom travels upwards to the top of the image plane.
Formation of the Upside-Down Image
- As a result of this crossing of light rays, the image on the opposite side of the pinhole is inverted.
- This means that everything you see through the pinhole appears flipped both horizontally and vertically.
Other Options Explained
- Option a) "The light is bent by a lens" is incorrect because a pinhole camera does not use a lens.
- Option b) "The small size of the pinhole" does not directly cause the inversion; it merely affects the sharpness and brightness of the image.
- Option d) "The camera is not properly aligned" is irrelevant to the fundamental principle of how light behaves in relation to the pinhole.
Understanding this principle helps clarify how simple optical devices like the pinhole camera work and why they produce unique visual effects.
A pinhole camera is a simple type of camera that operates without a lens, using only a small opening (the pinhole) to let light in. The unique characteristic of images produced by a pinhole camera is that they appear upside down. Let's explore why this happens.
Light Travels in Straight Lines
- The primary reason images appear upside down in a pinhole camera is that light travels in straight lines.
- When light rays from an object pass through the pinhole, they cross over each other.
- For example, light from the top of an object travels downwards to the bottom of the image plane, and light from the bottom travels upwards to the top of the image plane.
Formation of the Upside-Down Image
- As a result of this crossing of light rays, the image on the opposite side of the pinhole is inverted.
- This means that everything you see through the pinhole appears flipped both horizontally and vertically.
Other Options Explained
- Option a) "The light is bent by a lens" is incorrect because a pinhole camera does not use a lens.
- Option b) "The small size of the pinhole" does not directly cause the inversion; it merely affects the sharpness and brightness of the image.
- Option d) "The camera is not properly aligned" is irrelevant to the fundamental principle of how light behaves in relation to the pinhole.
Understanding this principle helps clarify how simple optical devices like the pinhole camera work and why they produce unique visual effects.
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What causes the images to appear upside down in a pinhole camera?a)The light is bent by a lensb)The small size of the pinholec)The light travels in straight linesd)The camera is not properly alignedCorrect answer is option 'C'. Can you explain this answer?
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