Multiple Choice
A Newtonian telescope uses
A) only one mirror with its front surface shaped into a parabola.
B) one curved mirror and one flat mirror at a 45° angle to the first mirror axis.
C) two flat mirrors inclined to each other at a right angle.
D) two curved mirrors, one convex, the second concave in shape.
Correct Answer:

Verified
Correct Answer:
Verified
Q49: A spherical mirror suffers from spherical aberration
Q50: How much time elapsed from when Ole
Q51: To what does the term "aberration" in
Q52: Devices to detect X-rays once they have
Q53: Increasing the exposure time of an image
Q55: Light enters a plane-parallel block of glass
Q56: Which of these types of electromagnetic radiation
Q57: When a ray of light strikes a
Q58: By what factor is the light-gathering power
Q59: If a person increases the exposure time