Conceptual Physics – Comprehensive Final Exam Review with Practice
Questions and Correct answers for Motion, Forces, Energy, Waves,
and Electricity
The incident light ray, the reflected light ray, and the normal between them
A) lie in the same plane.
B) may or may not lie in the same plane.
C) lie in planes that are perpendicular to one another. - correct answer A
Object and image for a plane mirror lie
A) along the same plane.
B) equal distances from the mirror.
C) at right angles to each other.
D) all of these
E) none of these - correct answer B
The law of reflection holds for
A) plane mirrors.
B) curved mirrors.
C) both of these
D) neither of these - correct answer C
Diffuse reflection occurs when the size of surface irregularities is
A) small compared to the wavelength of the light used.
B) large compared to the wavelength of the light used.
C) microscopic. - correct answer B
When light reflects from a surface, there is a change in its
A) frequency.
B) wavelength.
C) speed.
,D) all of these
E) none of these - correct answer E
If you walk towards a mirror at a certain speed, the relative speed between you and your image
is
A) half your speed.
B) your speed.
C) twice your speed.
D) none of these - correct answer C
As you face a plane mirror on the wall of your room, you raise your left hand. Your image raises
A) its left hand.
B) its right hand.
C) both hands.
D) neither hand. - correct answer B
You wish to photograph the image of your little sister, who is standing 2 meters from a plane
mirror. Holding the camera beside her head, you should set the distance for
A) 1 meter.
B) 2 meters.
C) 3 meters.
D) 4 meters.
E) none of these - correct answer D
A pair of plane mirrors are at right angles to each other. A coin placed near the mirrors has
A) A total of one image .
B) More than one image. - correct answer B
As a light ray enters or exits a water-air interface at an angle of 15 degrees with the normal, it
A) always bends toward the normal.
B) always bends away from the normal.
C) sometimes bends towards the normal.
D) does not bend. - correct answer C
,When light passes through an ordinary window pane, its angle of emergence is
A) usually less than its angle of incidence.
B) always less than its angle of incidence.
C) the same as its angle of incidence.
D) usually more than its angle of incidence.
E) always more than its angle of incidence. - correct answer C
Light travels fastest in
A) warm air.
B) cool air.
C) a vacuum. - correct answer C
Atmospheric refraction makes the daylight hours a bit
A) longer.
B) shorter.
C) longer in summer but shorter in winter. - correct answer A
A mirage is a result of atmospheric
A) reflection.
B) refraction.
C) scattering.
D) dispersion.
E) aberrations. - correct answer B
The twinkling of the stars is a result of atmospheric
A) reflection.
B) refraction.
C) scattering.
D) dispersion.
E) aberrations. - correct answer B
Refraction results from differences in light's
, A) frequency.
B) incident angles.
C) speed.
D) all of these
E) none of these - correct answer C
Light refracts when traveling from air into glass because light
A) has greater intensity in air than in glass.
B) has greater intensity in glass than in air.
C) has greater frequency in air than in glass.
D) has greater frequency in glass than in air.
E) travels slower in glass than in air. - correct answer E
At night an underwater scuba diver aims his flashlight beam toward the surface at an angle of
45 degrees with the normal. Upon emerging, the beam angle will be
A) less than 45 degrees.
B) 45 degrees.
C) more than 45 degrees.
D) impossible to predict. - correct answer C
When a light beam emerges from water into air, the average light speed
A) increases.
B) decreases.
C) remains the same. - correct answer A
Refraction causes the bottom of a swimming pool to appear
A) farther down than it actually is.
B) closer to the surface than it actually is.
C) neither. - correct answer B
In glass or water, the average speed of light is greatest for:
A) red light.
Questions and Correct answers for Motion, Forces, Energy, Waves,
and Electricity
The incident light ray, the reflected light ray, and the normal between them
A) lie in the same plane.
B) may or may not lie in the same plane.
C) lie in planes that are perpendicular to one another. - correct answer A
Object and image for a plane mirror lie
A) along the same plane.
B) equal distances from the mirror.
C) at right angles to each other.
D) all of these
E) none of these - correct answer B
The law of reflection holds for
A) plane mirrors.
B) curved mirrors.
C) both of these
D) neither of these - correct answer C
Diffuse reflection occurs when the size of surface irregularities is
A) small compared to the wavelength of the light used.
B) large compared to the wavelength of the light used.
C) microscopic. - correct answer B
When light reflects from a surface, there is a change in its
A) frequency.
B) wavelength.
C) speed.
,D) all of these
E) none of these - correct answer E
If you walk towards a mirror at a certain speed, the relative speed between you and your image
is
A) half your speed.
B) your speed.
C) twice your speed.
D) none of these - correct answer C
As you face a plane mirror on the wall of your room, you raise your left hand. Your image raises
A) its left hand.
B) its right hand.
C) both hands.
D) neither hand. - correct answer B
You wish to photograph the image of your little sister, who is standing 2 meters from a plane
mirror. Holding the camera beside her head, you should set the distance for
A) 1 meter.
B) 2 meters.
C) 3 meters.
D) 4 meters.
E) none of these - correct answer D
A pair of plane mirrors are at right angles to each other. A coin placed near the mirrors has
A) A total of one image .
B) More than one image. - correct answer B
As a light ray enters or exits a water-air interface at an angle of 15 degrees with the normal, it
A) always bends toward the normal.
B) always bends away from the normal.
C) sometimes bends towards the normal.
D) does not bend. - correct answer C
,When light passes through an ordinary window pane, its angle of emergence is
A) usually less than its angle of incidence.
B) always less than its angle of incidence.
C) the same as its angle of incidence.
D) usually more than its angle of incidence.
E) always more than its angle of incidence. - correct answer C
Light travels fastest in
A) warm air.
B) cool air.
C) a vacuum. - correct answer C
Atmospheric refraction makes the daylight hours a bit
A) longer.
B) shorter.
C) longer in summer but shorter in winter. - correct answer A
A mirage is a result of atmospheric
A) reflection.
B) refraction.
C) scattering.
D) dispersion.
E) aberrations. - correct answer B
The twinkling of the stars is a result of atmospheric
A) reflection.
B) refraction.
C) scattering.
D) dispersion.
E) aberrations. - correct answer B
Refraction results from differences in light's
, A) frequency.
B) incident angles.
C) speed.
D) all of these
E) none of these - correct answer C
Light refracts when traveling from air into glass because light
A) has greater intensity in air than in glass.
B) has greater intensity in glass than in air.
C) has greater frequency in air than in glass.
D) has greater frequency in glass than in air.
E) travels slower in glass than in air. - correct answer E
At night an underwater scuba diver aims his flashlight beam toward the surface at an angle of
45 degrees with the normal. Upon emerging, the beam angle will be
A) less than 45 degrees.
B) 45 degrees.
C) more than 45 degrees.
D) impossible to predict. - correct answer C
When a light beam emerges from water into air, the average light speed
A) increases.
B) decreases.
C) remains the same. - correct answer A
Refraction causes the bottom of a swimming pool to appear
A) farther down than it actually is.
B) closer to the surface than it actually is.
C) neither. - correct answer B
In glass or water, the average speed of light is greatest for:
A) red light.
