PHYSICS 1260 REVIEW 3 EXAM
QUESTIONS AND ANSWERS GRADED A+
2025/2026
C - ANS If you look at yourself in a pocket mirror, then hold the mirror farther away, you see
A) more of yourself.
B) less of yourself.
C) the same amount of yourself.
B - ANS Object and image for a plane mirror occur
A) along the same plane.
B) equal distances from the mirror.
C) at right angles to each other.
D) all of the above
E) none of the above
B - ANS 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.
A - ANS A rough surface for infrared waves may be polished for
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, A) radio waves.
B) light waves.
C) both of these
D) neither of these
E - ANS When light reflects from a surface, there is a change in its
A) frequency.
B) wavelength.
C) speed.
D) all of the above
E) none of the above
D - ANS You photograph the image of your little sister, who stands 2 meters in front of a plane
mirror. Holding the camera beside her head, the distance to her image is
A) 1 meter.
B) 2 meters.
C) 3 meters.
D) 4 meters.
E) none of the above
C - ANS 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 the above
A - ANS The shortest plane mirror in which you can see your entire image is
A) half your height.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
QUESTIONS AND ANSWERS GRADED A+
2025/2026
C - ANS If you look at yourself in a pocket mirror, then hold the mirror farther away, you see
A) more of yourself.
B) less of yourself.
C) the same amount of yourself.
B - ANS Object and image for a plane mirror occur
A) along the same plane.
B) equal distances from the mirror.
C) at right angles to each other.
D) all of the above
E) none of the above
B - ANS 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.
A - ANS A rough surface for infrared waves may be polished for
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, A) radio waves.
B) light waves.
C) both of these
D) neither of these
E - ANS When light reflects from a surface, there is a change in its
A) frequency.
B) wavelength.
C) speed.
D) all of the above
E) none of the above
D - ANS You photograph the image of your little sister, who stands 2 meters in front of a plane
mirror. Holding the camera beside her head, the distance to her image is
A) 1 meter.
B) 2 meters.
C) 3 meters.
D) 4 meters.
E) none of the above
C - ANS 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 the above
A - ANS The shortest plane mirror in which you can see your entire image is
A) half your height.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
