astro

Question 1

State three properties of converging lenses.

Answer 1

Converging lenses bring light rays together; Parallel rays that aren’t parallel to the principal axis converge somewhere else on the focal plane

Question 2

Can converging lenses form both real and virtual images?

Answer 2

Converging lenses can indeed form both real and virtual images, depending on where the object is placed relative to the lens.

Question 3

What is the Cassegrain arrangement in optical telescopes, and why is it used?

Answer 3

Convex secondary mirror is used to reflect light from the primary mirror to a focal point outside of the telescope, allowing for the observer to view the image without blocking the light

Question 4

What is the resolving power of a telescope?

Answer 4

The resolving power of a telescope is the amount of detail that can be seen through the lens or the mirror.