Statement I Focal length of the eyepiece of telescope is smaller as compared to the objective which has a larger focal length and aperture. Statement II For larger focal length of objective than eyepiece, magnification is more in astronomical telescopes.

Question

Statement I Focal length of the eyepiece of telescope is smaller as compared to the objective which has a larger focal length and aperture. Statement II For larger focal length of objective than eyepiece, magnification is more in astronomical telescopes. (A) Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement I. (B) Both Statement I and Statement II are correct but Statement II is not the correct explanation of Statement I. (C) Statement I is correct but Statement II is incorrect. (D) Statement I is incorrect but Statement II is correct.

Tardigrade Admin · Accepted Answer

For astronomical telescope, |m|=|(fo/fe)|. So, magnification is inversely proportional to focal length of the eyepiece and directly proportional to focal length of objective. The larger fo and smaller fe will given better magnification.

Q. Statement I Focal length of the eyepiece of telescope is smaller as compared to the objective which has a larger focal length and aperture.
Statement II For larger focal length of objective than eyepiece, magnification is more in astronomical telescopes.

Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement I.

Both Statement I and Statement II are correct but Statement II is not the correct explanation of Statement I.

Statement I is correct but Statement II is incorrect.

Statement I is incorrect but Statement II is correct.

For astronomical telescope, $∣ m ∣ = ∣ ∣ \frac{f _{o}}{f _{e}} ∣ ∣$ .
So, magnification is inversely proportional to focal length of the eyepiece and directly proportional to focal length of objective. The larger $f_{o}$ and smaller $f_{e}$ will given better magnification.

Q. Statement I Focal length of the eyepiece of telescope is smaller as compared to the objective which has a larger focal length and aperture. Statement II For larger focal length of objective than eyepiece, magnification is more in astronomical telescopes.