Sign Convention
WILDCARD DOUBLE POINTS
If the image distance di is negative, the image is:
A) Real and inverted
B) Virtual and behind the mirror
C) Real and upright
D) At the focal point
B) Virtual and behind the mirror
Wild Card: Free Pass
A concave mirror has f=10, do=30 cm.
Without full calculation, the image is:
A) Virtual
B) Real
C) At infinity
D) Behind the mirror
B) Real
If m=−1, the image is:
A) Upright and same size
B) Inverted and same size
C) Virtual and enlarged
D) Reduced
B) Inverted and same size
A real image can be:
A) Seen in a convex mirror
B) Projected on a screen
C) Behind the mirror
D) Upright
B) Projected on a screen
In The Lord of the Rings, the “Palantír” works most similarly to:
A) A convex mirror
B) A concave mirror inside focal length
C) A plane mirror
D) A telescope objective lens
B) A concave mirror inside focal length
A mirror has f=−15 cm. What type of mirror is it?
A) Concave
B) Plane
C) Convex
D) Parabolic concave
C) Convex
Using di= f*do/do-f,
If f=12, do=36, then di is:
A) 18 cm
B) 24 cm
C) 12 cm
D) -18 cm
A) 18 cm
If m=+3, the image is:
A) Real and inverted
B) Virtual and upright
C) Reduced
D) Same size
B) Virtual and upright
Which mirror can produce both real and virtual images?
A) Convex
B) Plane
C) Concave
D) Cylindrical
C) Concave
In Interstellar, what scientific concept allows time to pass differently near the black hole?
A) Doppler Effect
B) Time dilation
C) Nuclear fusion
D) Quantum tunneling
B) Time dilation
If m=−1m, the image is:
A) Upright and same size
B) Inverted and same size
C) Virtual and enlarged
D) Reduced
D) Reduced
If do=20 cm and di=20 cm the focal length is:
f=do*di/do+di
A) 5 cm
B) 10 cm
C) 20 cm
D) 40 cm
B) 10 cm
WILDCARD DOUBLE POINTS
If do=25 cm and di=50 cm, determine m
m= -di/do
A) -2
B) -0.5
C) +2
D) +0.5
A) -2
A convex mirror image is always:
A) Real
B) Inverted
C)Null
D) Virtual
D) Virtual
In Breaking Bad, what is the name of the fast-food chain used as a front for money laundering?
A) Pollos Hermanos
B) Taco Cabeza
C) Chicken King
D) Los Amigos
A) Pollos Hermanos
If magnification is positive, the image is:
A) Inverted
B) Virtual or upright
C) Always real
D) Always reduced
B) Virtual or upright
If a concave mirror produces di=−30 cm, the object must be:
A) Beyond 2f
B) At 2f
C) Inside focal length
D) At the center of curvature
C) Inside focal length
A convex mirror always produces magnification that is:
A) Negative
B) Greater than 1
C) Positive and less than 1
D) Equal to 1
C) Positive and less than 1
If reflected rays physically converge in front of the mirror, the image is:
A) Virtual
B) At infinity
C) Real
D) Reduced
C) Real
Which movie won the Academy Award for Best Picture in 2024?
A) Oppenheimer
B) Barbie
C) Poor Things
D) Killers of the Flower Moon
A) Oppenheimer
If do=f, then:
A) di=f
B) di=−f
C) di→∞
D) =0
C) di→∞
If f=8 cm and do=12 cm:
di= f*do/do-f
A) Real and enlarged
B) Virtual and reduced
C) Real and reduced
D) Virtual and enlarged
A) Real and enlarged
If ho=4 cm and m=−0.5, determine hi
hi=m*ho
A) +2 cm
B) -8 cm
C) -2 cm
D) +8 cm
C) -2 cm
Which statement is correct?
A) A convex mirror can produce real images
B) A concave mirror always produces real images
C) A concave mirror can invert an image
D) A plane mirror produces inverted images
C) A concave mirror can invert an image
In Shrek 2 (2004), what is the name of the potion factory where the Fairy Godmother works?
A) Royal Magic Industries
B) Fairy Tale Industries
C) Happily Ever After Incorporated
D) Far Far Away Labs
C) Happily Ever After Incorporated