SaraNextGen.Com

In an astronomical telescope in normal adjustment, a straight black line of length  is drawn on the objective lens. The eyepiece forms a real image of this line. The length of this image is . The magnification of the telescope is

a)

b)

c)

d)



Question ID - 152416 | SaraNextGen Top Answer

In an astronomical telescope in normal adjustment, a straight black line of length  is drawn on the objective lens. The eyepiece forms a real image of this line. The length of this image is . The magnification of the telescope is

a)

b)

c)

d)

1 Answer
127 votes
Answer Key / Explanation : (a) -

(a)

Here we treat the line on the objective as the object and the eyepiece as the lens

Hence  and

Now

Solving we get

Magnification

 Magnification of telescope in normal adjustment

127 votes


127