Register

An astronomical telescope has an objective of diameter 20 cm with a focal length of 180 cm. the telescope is used with an eyepiece of focal length 30 mm. what is the angular mag…

An astronomical telescope has an objective of diameter 20 cm with a focal length of 180 cm. the telescope is used with an eyepiece of focal length 30 mm. what is the angular mag…
83.0k views
5 votes
An astronomical telescope has an objective of diameter 20 cm with a focal length of 180 cm. the telescope is used with an eyepiece of focal length 30 mm. what is the angular magnification of this telescope?

User Ismelda
by
8.7k points

1 Answer

2 votes
By definition;
M = fo/fe

Where,
M = Angular magnification
fo = Focal length of objective lens
fe = Focal length of eyepiece lens

From the information given;
M = 180/30 = 6
User Cinsere
by
8.1k points
← Prev Question Next Question →

Related questions

Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Other Questions

At sea level, water boils at 100 degrees celcius and methane  boiled at -161 degrees celcius. Which of these substances has a stronger force of attraction between its particles? Explain your answer
Physical properties of minerals graphic organizer
A snowball is launched horizontally from the top of a building at v = 16.9 m/s. If it lands d = 44 meters from the bottom, how high (in m) was the building?
what is a device that transforms thermal energy to mechanical energy
How many light sources do you know Pls list them
Link Copied!