A refracting telescope has an objective of focal length m and an eyepiece of focal length mm. Calculate its angular magnification in normal adjustment.
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12 questions
Calculate the distance in m between the lenses of the same telescope in normal adjustment.
Salam Academy Original Practice · Proposed mark scheme
An m telescope is compared with a m telescope. State how many times greater its collecting power is.
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Reflecting telescopes have an advantage over refractors because mirrors
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X-ray telescopes must be placed in orbit because
Salam Academy Original Practice · Proposed mark scheme
A refractor has m and mm. Calculate its angular magnification in normal adjustment.
Salam Academy Original Practice · Proposed mark scheme
State how many times greater the collecting power of a m telescope is than that of a m telescope.
Salam Academy Original Practice · Proposed mark scheme
In a Cassegrain telescope, the secondary mirror is
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Calculate the minimum angular separation, in μrad, that a telescope of aperture m can resolve at a wavelength of nm.
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The Lovell radio telescope has a m dish and observes hydrogen emission at m. Calculate its minimum resolvable angle in mrad.
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A CCD is preferred to the human eye for astronomy mainly because
Salam Academy Original Practice · Proposed mark scheme
Calculate the minimum resolvable angle, in μrad, of a m telescope at nm.
Salam Academy Original Practice · Proposed mark scheme