what is the number of lenses of a galilean telescope by a convex?
Updated 10/10/2017 12:27:10 AM
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Original conversation
User: what is the number of lenses of a galilean telescope by a convex?

Weegy: There are two types of telescopes: Reflectors and refractors

User: an refractor telescope?

Weegy: India refractor telescope, choose quality India refractor telescope products from large database of India refractor telescope manufacturers, India [ ]

Updated 10/10/2017 12:27:10 AM
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A refractor telescope is a type of optical telescope that uses a lens as its objective to form an image (also referred to a dioptric telescope).

Questions asked by the same visitor
what is the effect of combination of a diverging and a converging lens ?
Weegy: The effect of a diverging and converging lens is that the real image of the first lens becomes the virtual object to the second lens, vice versa. User: a converging lens with an 18 cm. focal length is used for a lens of a projector. if a film is placed 20 cm. away from the lens, how far must the screen be placed from the lens? (More)
Question
Updated 16 days ago|11/20/2023 7:14:30 AM
we can use the lens formula:
v + 18 = 18v/20
20(v + 18) = 18v
Expanding the equation:
20v + 360 = 18v
Combining like terms:
2v = -360
Dividing both sides by 2:
v = -180
Added 16 days ago|11/20/2023 7:14:30 AM
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