Question

Which of the following is true for a telescope?

• A. Final image is real and inverted.
• B. It increases the size of the object.
• C. It increases the angle subtended by image at the eye of the observer.
• D. Smaller telescopes are more powerful

Answer 1

The correct option is C It increases the angle subtended by image at the eye of the observer.

Telescope increases the visual angle of an object considerably and hence it allows to study the details of the objects carefully. The final image is actually much smaller than the object itself.