An object 0.03 m is placed a distance of 0.08 m from a pinhole camera. If the length of the camera is 0.04 m, calculate the image height.
A
1.5 x 10\(^{-2}\)m
B
4.0 x 10\(^{-2}\)m
C
3.0 x 10\(^{-2}\)m
D
6.0 x 10\(^{-2}\)m
Verified Correct Answer: A.
Physical Principles & Numerical Solution
For a pinhole camera:
\(\frac{\text{image height}}{\text{object height}}\) = \(\frac{\text{image distance}}{\text{object distance}}\)
= \(\frac{h_i}{0.03}\) = \(\frac{0.04}{0.08}\)
h\(_i\) = \(\frac{0.03 \times 0.04}{0.08}\) = 0.015m = 1.5 x 10\(^{-2}\)m
Source: Myschool Past Questions Archive (Record #78263)