Question
A lightbulb is $56 \mathrm{~cm}$ from a convex lens. Its image appears on a screen $31 \mathrm{~cm}$ from the lens, on the other side. Find (a) the lens's focal length and (b) how much the image is enlarged or reduced.
Step 1
We need to find the focal length (f) of the lens. We can use the lens formula: 1/f = 1/u + 1/v Show more…
Show all steps
Your feedback will help us improve your experience
Mayukh Banik and 99 other educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
A lightbulb is $56 \mathrm{~cm}$ from a convex lens, and its image appears on a screen $31 \mathrm{~cm}$ on the other side of the lens. (a) What's the lens's focal length? (b) By how much is the image enlarged or reduced?
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD