An astronomical telescope has an angular magn | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) For an astronomical telescope,the angular magnification $m$ when the final image is at infinity is given by $|m| = \frac{f_o}{f_e}$.Given $|m| = 5

Vedclass · Accepted Answer

$30 \, cm, 6 \, cm$

Vedclass · Answer

(A) For an astronomical telescope,the angular magnification $m$ when the final image is at infinity is given by $|m| = \frac{f_o}{f_e}$.Given $|m| = 5$,we have $f_o = 5f_e$.The length of the telescope tube $L$ for the final image at infinity is $L = f_o + f_e$.Given $L = 36 \, cm$,we substitute $f_o = 5f_e$ into the equation:$5f_e + f_e = 36 \, cm$$6f_e = 36 \, cm$$f_e = 6 \, cm$.Now,calculating $f_o$:$f_o = 5 	imes 6 \, cm = 30 \, cm$.Thus,the focal lengths are $30 \, cm$ and $6 \, cm$.

An astronomical telescope has an angular magnification of magnitude $5$ for distant objects. The separation between the objective and eyepiece is $36 \, cm$ and the final image is formed at infinity. The focal lengths of the objective and eyepiece are respectively:

Similar Questions

If $F_o$ and $F_e$ are the focal lengths of the objective and eyepiece respectively of a telescope,then its magnifying power will be

The focal length of the objective and eye lens of an astronomical telescope are $2 \, m$ and $5 \, cm$ respectively. The final image is formed at $(i)$ the least distance of distinct vision and $(ii)$ infinity. The magnifying power in both cases will be:

What are reflecting type of telescopes? Explain the advantages and disadvantages of reflecting telescopes as compared to refracting telescopes.

If the focal length of the eyepiece of a telescope is doubled, its magnifying power $(m)$ will be

The angular magnification of an astronomical telescope is $10$. The final image is formed at infinity. The length of the telescope is $44 \, cm$. The focal length of the objective lens is .......... $cm$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module