Physics Chapter 23 Review

Question 1

Incident rays that pass through the focus of a concave mirror are always reflected.

Accepted Answer

Parallel to the optical axis

Question 2

The # of images that are formed when 2 plane mirrors are placed to create a corner reflector

Accepted Answer

Increases as the angle between the mirrors decreases

Question 3

Light waves travel in ____ in a uniform medium.

Accepted Answer

Straight lines

Question 4

Who measured his assistant's reaction time instead of the speed of light?

Accepted Answer

Christiaan Huygens

Question 5

One of the laws of reflection states that the

Accepted Answer

Angle of incidence is equal to the angle of reflection

Question 6

Light that is at a single frequency is called ____ light.

Accepted Answer

monochromatic

Question 7

How many images are produced by 2 plane mirrors placed at a 450 angle to each other?

Accepted Answer

7

Question 8

Electromagnetic rays travel in smooth curves through a uniform medium.

Accepted Answer

False

Question 9

Some cosmic rays are high-energy forms of

Accepted Answer

Gamma rays

Question 10

Cosmetic mirrors that produce a magnified image are ____ mirrors.

Accepted Answer

concave

Question 11

How many complete images are produced by 2 plane mirrors placed at a 250 angle to each other?

Accepted Answer

13

Question 12

In a uniform medium, waves with longer wavelengths have higher frequencies

Accepted Answer

False

Question 13

The most common primary mirror for a Newtonian reflector telescope is a ____ mirror.

Accepted Answer

parabolic

Question 14

Infrared waves are generated by accelerated charges.

Accepted Answer

False, False, False

Question 15

Light rays propagate parallel to their wave fronts.

Accepted Answer

False

Question 16

Which type of electromagnetic wave results from the greatest change in energy of "e" in atoms?

Accepted Answer

Ultraviolet

Question 17

Who is going to get 100% on the physics test?

Accepted Answer

Andrew and Vinh

Question 18

Light travels in ____ waves from a point source.

Accepted Answer

Spherical

Question 19

The speed of x-rays in a vacuum is ____

Accepted Answer

3.00 x 108 m/s

Question 20

When an object is located between a mirror's principal focus and the mirror, the image will be

Accepted Answer

Virtual

Question 21

Which of the following is not a direct source of visible light?

Accepted Answer

the light from the moon

Question 22

There are an infinite number of colors in visible light

Accepted Answer

True

Question 23

In a vacuum, gamma rays travel at the speed of light

Accepted Answer

True

Question 24

Locate the image formed by a concave spherical mirror: length - 8cm, object: 40cm from mirror.

Accepted Answer

10 cm

Question 25

Waves with short wavelengths have ____ energy than those with longer wavelengths.

Accepted Answer

Higher

Physics Chapter 23 Review

Questions 25

Physics Chapter 23 Review

Questions 25