NSCI 101 Physical Science Laboratory Activity 4 – Lenses and Mirrors

NSCI 101 Physical Science Laboratory Activity 4 – Lenses and
Mirrors

Data Sheet: Activity 4 – Lenses and Mirrors
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Name Course Date

NSCI 101 Physical Science Laboratory 7th September 2022


Activity Data Code: MCQ

Table I – Lens 1, Focal Distance = 10 cm

Complete the table below using your data and information found under the Background tab
(see "Summary of Formulas and Concepts Needed for Calculations").

Note: screen distance and image distance are the same for a sharp in-focus image.


Object Distance Image Distance Image
Trial Magnification
(cm) (cm) Smaller or Larger

1 20 20 larger 1

2 30 15 smaller 0.5

3 40 13.3 smaller 0.3



Observations and Questions

[1] Describe the difference in image size and magnification seen in each trial above.


If the image size is equal to object size the magnification is equal to one. The
magnification is less than 1 when image distance is less than object distance.


Sample Calculation: For Trial 2 show that f, do, and di satisfy the lens/mirror equation.

1/f=1/d0+1/di
1/10=1/30+1/d0
1/do=1/10-1/30
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