LECTURE 9

What is the apparent bending of light as it passes through a medium called?

• Reflection

• Refraction

• Dispersion

• Diffraction

Where are images formed after passing through a lens?

• Focal plane

• Objective lens

• Eyepiece

• Aperture

What is the main factor that determines the light collecting area and angular resolution of a telescope?

• Magnification

• Eyepiece design

• Aperture size

• Focal length

What are the two main types of telescopes?

• Refracting and reflecting

• Radio and X-ray

• Infrared and ultraviolet

• Satellite and ground-based

What is the current diameter of the largest optical telescopes in the world?

• 10 meters

• 8 meters

• 12 meters

• 5 meters

How are astronomical images at non-visible wavelengths represented?

• Monochrome

• False-color

• True-color

• Black and white

What is the term for human-made background light that impacts telescopes?

• Atmospheric interference

• Light pollution

• Solar radiation

• Cosmic rays

What technology helps correct for the distortions caused by the Earth's atmosphere?

• Interferometry

• Adaptive optics

• Spectroscopy

• Polarimetry

What is the name of the large space telescope that launched in December 2021?

• Chandra X-ray Observatory

• Spitzer Space Telescope

• Hubble Space Telescope

• James Webb Space Telescope

What is the diameter of the Sun?

• 1.4 x 10^8 m

• 1.4 x 10^6 m

• 1.4 x 10^9 m

• 1.4 x 10^7 m