Question

question 10
the light in the spectrum with the longest wavelength is red.
true
false
question 11
the light - year is used to measure speed.
true
false
question 12
the instrument that gathers and focuses radio waves from objects in space is the radio telescope.
true
false
question 13
an eliptical telescope that uses curved mirrors instead of an objective lens is a refractor telescope.
true
false

Explanation:

• For Question 10: In the visible - light spectrum, red light has the longest wavelength among the colors, so it's true.
• For Question 11: A light - year is the distance light travels in one year, used to measure distance, not speed, so it's false.
• For Question 12: A radio telescope is designed to gather and focus radio waves from space objects, so it's true.
• For Question 13: A telescope using curved mirrors instead of an objective lens is a reflector telescope, not a refractor telescope, so it's false.

Answer:

Question 10: A. True
Question 11: B. False
Question 12: A. True
Question 13: B. False