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A telescope has an objective of focal length 200 cm and an eyepiece of focal length 5 cm. What is the magnification of the telescope?
- a)40
- b)80
- c)50
- d)0.1
Correct answer is option 'A'. Can you explain this answer?
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Calculation of Magnification of the Telescope:
- Given:
- Objective focal length (f_o) = 200 cm
- Eyepiece focal length (f_e) = 5 cm
- Magnification of the Telescope (M):
- The magnification of a telescope is given by the formula:
M = - (f_o / f_e)
- Substitute the Given Values:
- M = - (200 cm / 5 cm)
- M = - 40
- Interpretation of Magnification:
- The negative sign indicates that the image formed is inverted.
- The magnification factor of 40 means that the telescope will make the observed object appear 40 times closer than it actually is.
Therefore, the magnification of the telescope is 40, which corresponds to option A.
- Given:
- Objective focal length (f_o) = 200 cm
- Eyepiece focal length (f_e) = 5 cm
- Magnification of the Telescope (M):
- The magnification of a telescope is given by the formula:
M = - (f_o / f_e)
- Substitute the Given Values:
- M = - (200 cm / 5 cm)
- M = - 40
- Interpretation of Magnification:
- The negative sign indicates that the image formed is inverted.
- The magnification factor of 40 means that the telescope will make the observed object appear 40 times closer than it actually is.
Therefore, the magnification of the telescope is 40, which corresponds to option A.
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A telescope has an objective offocal length 200 cm and an eyepieceoffocal length 5 cm. What is the magnification of the telescope?a)40b)80c)50d)0.1Correct answer is option 'A'. Can you explain this answer?
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