A pinhole camera is placed 300m in front of a building so that the image is form...
Question
A pinhole camera is placed 300m in front of a building so that the image is formed on a screen 5cm from the the pinhole. If the image is 2.5cm high, the height of the building will beOptions
A) 25m
B) 50m
C) 100m
D) 150m
Related Lesson: Image Formation by Thin Lenses | Geometric Optics
The correct answer is D.
Explanation:
==> \(\frac{v}{u}\) = \(\frac{hi}{ho}\)
==> \(\frac{5}{300}\) = \(\frac{2.5}{ho}\)
= 150m
More Past Questions:
Dicussion (1)
Other Subjects
- English Language
- Biology
- Government
- Mathematics
- Chemistry
- Economics
- Christian Religious Knowledge
- Commerce
- Geography
- Literature In English
- Accounts
- Agricultural Science
- General Paper
- Islamic Religious Knowledge
- History
- Further Mathematics
- Current Affairs
- Civic Education
- Computer Studies
- Yoruba
- Hausa
- Igbo
- French
- Home Economics
- Sweet Sixteen
- Fine Arts
==> \(\frac{v}{u}\) = \(\frac{hi}{ho}\)
==> \(\frac{5}{300}\) = \(\frac{2.5}{ho}\)
= 150m