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A refracting telescope consists of
- a)one concave mirror and one convex lens
- b)two convex lenses of equal focal length
- c)two concave mirrors of different focal lengths
- d)two convex lenses of unequal focal lengths
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
A refracting telescope consists ofa)one concave mirror and one convex ...
Refracting Telescope
A refracting telescope is an optical instrument that uses lenses to gather and focus light, enabling the observation of distant objects. It consists of the following components:
Objective Lens
- The objective lens is a convex lens that gathers light and forms an image at the focal point.
- It is responsible for capturing and focusing the incoming light onto the focal plane.
Eyepiece Lens
- The eyepiece lens is a convex lens that magnifies the image formed by the objective lens.
- It is placed near the focal point of the objective lens to allow for comfortable viewing.
Tubular Structure
- The lenses are housed in a tubular structure, which provides support and alignment for the optical components.
How it works
1. Light enters the telescope through the objective lens.
2. The convex shape of the objective lens converges the light rays, bringing them to a focal point.
3. At the focal point, an inverted and magnified image of the observed object is formed.
4. The eyepiece lens is positioned near the focal point of the objective lens to capture the image formed.
5. The convex shape of the eyepiece lens further magnifies the image, allowing for detailed observation.
6. The observer looks through the eyepiece lens to view the magnified image.
Conclusion
A refracting telescope consists of a convex objective lens and a convex eyepiece lens, both of which work together to gather, focus, and magnify light. The objective lens forms an image at its focal point, and the eyepiece lens further magnifies this image for observation.
A refracting telescope is an optical instrument that uses lenses to gather and focus light, enabling the observation of distant objects. It consists of the following components:
Objective Lens
- The objective lens is a convex lens that gathers light and forms an image at the focal point.
- It is responsible for capturing and focusing the incoming light onto the focal plane.
Eyepiece Lens
- The eyepiece lens is a convex lens that magnifies the image formed by the objective lens.
- It is placed near the focal point of the objective lens to allow for comfortable viewing.
Tubular Structure
- The lenses are housed in a tubular structure, which provides support and alignment for the optical components.
How it works
1. Light enters the telescope through the objective lens.
2. The convex shape of the objective lens converges the light rays, bringing them to a focal point.
3. At the focal point, an inverted and magnified image of the observed object is formed.
4. The eyepiece lens is positioned near the focal point of the objective lens to capture the image formed.
5. The convex shape of the eyepiece lens further magnifies the image, allowing for detailed observation.
6. The observer looks through the eyepiece lens to view the magnified image.
Conclusion
A refracting telescope consists of a convex objective lens and a convex eyepiece lens, both of which work together to gather, focus, and magnify light. The objective lens forms an image at its focal point, and the eyepiece lens further magnifies this image for observation.
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Community Answer
A refracting telescope consists ofa)one concave mirror and one convex ...
Explanation:
Refracting Telescope Components:
- A refracting telescope consists of two convex lenses of unequal focal lengths.
- The two lenses work together to gather and focus light to create an image.
Function of Convex Lenses:
- The first convex lens, known as the objective lens, gathers light from distant objects and forms an initial, real image.
- The second convex lens, called the eyepiece lens, magnifies this real image to make it visible to the observer.
Unequal Focal Lengths:
- The reason for using two convex lenses of unequal focal lengths is to achieve a longer effective focal length for the telescope.
- This longer focal length allows for higher magnification and better image quality.
Advantages of Two Lenses:
- By using two lenses, the telescope can achieve higher magnification without increasing the physical length of the device.
- The two lenses work together to provide a clear, magnified view of distant objects.
Conclusion:
In a refracting telescope, the use of two convex lenses of unequal focal lengths is essential for gathering and focusing light to create a magnified image. The combination of these lenses allows for higher magnification and better image quality compared to using a single lens.
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A refracting telescope consists ofa)one concave mirror and one convex lensb)two convex lenses of equal focal lengthc)two concave mirrors of different focal lengthsd)two convex lenses of unequal focal lengthsCorrect answer is option 'D'. Can you explain this answer?
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