Join the Most Relevant JEE Main 2025 Test Series & get 99+ percentile! Join Now
Search any question & find its solution
Question: Answered & Verified by Expert
In a reflecting telescope, a secondary mirror is used to:
PhysicsRay OpticsBITSATBITSAT 2023 (Memory Based Paper 1)
Options:
  • A reduce the problem of mechanical support
  • B remove spherical aberration
  • C make chromatic aberration zero
  • D move the eyepiece outside the telescopic tube
Solution:
1760 Upvotes Verified Answer
The correct answer is: move the eyepiece outside the telescopic tube
(d) To redirect the light that enters the telescope to the eyepiece or camera. The primary mirror of a reflecting telescopes gathers the light and reflects towards the secondary mirror which then reflect the light towards the eyepiece allowing the observer to see image.
It has advantage of a large focal length in a short telescope.

Looking for more such questions to practice?

Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.