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Consider the following statements about a microscope and a telescope:
1. Both the eyepiece and the objective of a microscope are convex lenses.
2. The focal length of the objective of a telescope is larger than the focal length of its eyepiece.
3. The magnification of a telescope increases with the increase in focal length of its objective.
4. The magnification of a microscope increases with increase in focal length of its objective.
Q. Which of the statements given above are correct?
  • a)
    1 and 3 only
  • b)
    1 and 4
  • c)
    2, 3 and 4
  • d)
    1, 2 and 3
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Consider the following statements about a microscope and a telescope:1...
If the focal length of the objective lens is increased than magnifying power of microscope will decrease and but that of telescope will increase.
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Most Upvoted Answer
Consider the following statements about a microscope and a telescope:1...
The correct statements about a microscope and a telescope are:

1. Both the eyepiece and the objective of a microscope are convex lenses.
2. The focal length of the objective of a telescope is larger than the focal length of its eyepiece.
3. The magnification of a telescope increases with the increase in focal length of its objective.

Now let's discuss each statement in detail:

1. Both the eyepiece and the objective of a microscope are convex lenses:
In a microscope, the objective lens is responsible for gathering light from the specimen and producing a magnified real image. The eyepiece lens further magnifies this image and allows the observer to view it. Both lenses are convex in shape to converge the light rays and form the image.

2. The focal length of the objective of a telescope is larger than the focal length of its eyepiece:
In a telescope, the objective lens or mirror collects and focuses the incoming light to form an image at its focal point. The eyepiece lens or mirror then magnifies this image for observation. The focal length of the objective is larger than that of the eyepiece because a longer focal length allows for better light-gathering power and higher magnification.

3. The magnification of a telescope increases with the increase in focal length of its objective:
The magnification of a telescope is determined by the ratio of the focal length of the objective to the focal length of the eyepiece. This is known as the magnification formula: M = FO/FE, where M is the magnification, FO is the focal length of the objective, and FE is the focal length of the eyepiece. Therefore, as the focal length of the objective increases, the magnification of the telescope also increases.

4. The magnification of a microscope increases with an increase in the focal length of its objective:
This statement is incorrect. The magnification of a microscope is determined by the combination of the focal lengths of both the objective and the eyepiece. The formula for the total magnification of a compound microscope is M = MO x ME, where M is the total magnification, MO is the magnification of the objective, and ME is the magnification of the eyepiece. The magnification of the objective depends on its design and is typically fixed, while the eyepiece can be interchanged to vary the overall magnification. Therefore, the magnification of a microscope does not solely depend on the focal length of the objective.

In conclusion, the correct statements about a microscope and a telescope are 1, 2, and 3.
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Community Answer
Consider the following statements about a microscope and a telescope:1...
If u see the formula in class 12 physics book.. It is m=-f0/fe in microscope whereas opposite I'm vase of telescope. Hope u understand gentleman. THANX
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Consider the following statements about a microscope and a telescope:1. Both the eyepiece and the objective of a microscope are convex lenses.2. The focal length of the objective of a telescope is larger than the focal length of its eyepiece.3. The magnification of a telescope increases with the increase in focal length of its objective.4. The magnification of a microscope increases with increase in focal length of its objective.Q. Which of the statements given above are correct?a)1 and 3 onlyb)1 and 4c)2, 3 and 4d)1, 2 and 3Correct answer is option 'D'. Can you explain this answer?
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Consider the following statements about a microscope and a telescope:1. Both the eyepiece and the objective of a microscope are convex lenses.2. The focal length of the objective of a telescope is larger than the focal length of its eyepiece.3. The magnification of a telescope increases with the increase in focal length of its objective.4. The magnification of a microscope increases with increase in focal length of its objective.Q. Which of the statements given above are correct?a)1 and 3 onlyb)1 and 4c)2, 3 and 4d)1, 2 and 3Correct answer is option 'D'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about Consider the following statements about a microscope and a telescope:1. Both the eyepiece and the objective of a microscope are convex lenses.2. The focal length of the objective of a telescope is larger than the focal length of its eyepiece.3. The magnification of a telescope increases with the increase in focal length of its objective.4. The magnification of a microscope increases with increase in focal length of its objective.Q. Which of the statements given above are correct?a)1 and 3 onlyb)1 and 4c)2, 3 and 4d)1, 2 and 3Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements about a microscope and a telescope:1. Both the eyepiece and the objective of a microscope are convex lenses.2. The focal length of the objective of a telescope is larger than the focal length of its eyepiece.3. The magnification of a telescope increases with the increase in focal length of its objective.4. The magnification of a microscope increases with increase in focal length of its objective.Q. Which of the statements given above are correct?a)1 and 3 onlyb)1 and 4c)2, 3 and 4d)1, 2 and 3Correct answer is option 'D'. Can you explain this answer?.
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