Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skillsβperfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Enroll to start learning
Youβve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take mock test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the purpose of a telescope?
π‘ Hint: Think about distant stars and planets.
Question 2
Easy
Name the two main components of a telescope.
π‘ Hint: One gathers light, and the other helps us see it.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the magnifying power if the objective focal length is 100 cm and the eyepiece focal length is 20 cm?
- 5
- 10
- 20
π‘ Hint: Use the focal lengths in the formula.
Question 2
True or False: A longer focal length in a telescope generally means lower magnifying power.
- True
- False
π‘ Hint: Think about how focal length affects magnification.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If a telescope's objective lens has a focal length of 250 cm and the eyepiece has 5 cm, what is its magnifying power? Discuss how this affects observations of faint stars.
π‘ Hint: Use M = f_o / f_e to find magnifying power.
Question 2
Imagine an astronomer has a telescope with a focal length of 180 cm for the objective and is using a 15 cm eyepiece. If they change to an eyepiece of 30 cm, how will the magnifying power change?
π‘ Hint: Remember the formula for magnifying power.
Challenge and get performance evaluation