Question:

Students use an optical bench setup (similar to the image below) to explore how the focal length of a lens affects the distance

Students use an optical bench setup (similar to the image below) to explore how the focal length of
a lens affects the distance and magnification of images.
& ll
• 10
20 30
40
They have been tasked with determining the focal lengths and image magnification for two lenses
using their optical bench. The students collect the following measurements:
Lens A Lens B
6cm
6cm
30cm
30cm
Object height
Object distance
Image height
Image distance
RIA
2
2
60cm
30cm
LOIS
LOID
6cm
6cm
Object height
Object distance
30cm
30cm
Image height
?
?
Image distance
60cm
30cm
Focal length
2
?
Choose the answer that demonstrates the correct relationship between lenses A and B in terms of
focal lengths and image height and identify whether the image will be upright or inverted?
O
Focal length: Lens A > Lens B; Image height: Lens A > Lens B; upright image
Focal length: Lens A > Lens B; Image height: Lens A > Lens B; inverted image
o
Focal length: Lens A <Lens B: Image height: Lens A<Lens B; upright image
C
Focal length: Lens A < Lens B: Image height: Lens A <Lens B: inverted image

Students use an optical bench setup (similar to the image below) to explore how the focal length of a lens affects the distance and magnification of images. & ll • 10 20 30 40 They have been tasked with determining the focal lengths and image magnification for two lenses using their optical bench. The students collect the following measurements: Lens A Lens B 6cm 6cm 30cm 30cm Object height Object distance Image height Image distance RIA 2 2 60cm 30cm LOIS LOID 6cm 6cm Object height Object distance 30cm 30cm Image height ? ? Image distance 60cm 30cm Focal length 2 ? Choose the answer that demonstrates the correct relationship between lenses A and B in terms of focal lengths and image height and identify whether the image will be upright or inverted? O Focal length: Lens A > Lens B; Image height: Lens A > Lens B; upright image Focal length: Lens A > Lens B; Image height: Lens A > Lens B; inverted image o Focal length: Lens A <Lens B: Image height: Lens A<Lens B; upright image C Focal length: Lens A < Lens B: Image height: Lens A <Lens B: inverted image