An astronomical telescope is being used to examine a relativelyclose object that

Question

An astronomical telescope is being used to examine a relativelyclose object that is only 102.00 m away from the objective of thetelescope. The objective and eyepiece have focal lengths of 1.090and 0.0870 m, respectively. Noting that the expression M =fo/fe is no longerapplicable because the object is so close, use the thin-lens andmagnification equations to find the angular magnification of thistelescope.

i cant seem to get the correct answer. please help! im on thelast try so i cant get it wrong again

Number

Units

Number

Units

No units

Explanation / Answer

   from the theory we get the thin lens equation as    (1 / di) = (1 / fo) - (1 /do)               =(1 / 1.090 m) - (1 / 102.00 m)    di = ........ m    now the magnification will be    M = - (di / do)        = - (di /102.00 m)    now we use this first image as an object for thesecond lens    (1 / di') = (1 / fe) - (1 /do')               =(1 / 0.0870 m) - (1 / do')    di' = ........ m    in this case the magnification will be    M ' = - (di' / do')    the total magnification will be    M1 = M M'    the angular magnification is then    ' = - (hi' /di')    = ho / (do+ fo + fe)    Mang = ' /

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.