Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 OBSERVATIONS Figure 1 Figure 2 f(cm) R 1 =R 2 (cm) Measured 12.3 13.6 Calculated 13.6 - % Difference 9.5588% - Table 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 DISCUSSION In this lab experiment we explored how the properties of a concave lens behaves according to it focal point by looking at its diverging rays of the ray beam. And also from this lab experiment we could get to know the Lensmaker’s Equqtion and how to calculate the focal length using that equation. Theories Diverging parallel rays trace back to the focal point. The light does not actually pass through the focal point. So that we can’t make a fire focusing sunlight with a diverging lens. Lensmaker's equation The focal length of a lens in air can be calculated from the lensmaker's equation: where f is the focal length of the lens, n is the refractive index of the lens material, R 1 is the radius of curvature of the lens surface closest to the light source, R 2 is the radius of curvature of the lens surface farthest from the light source, and d is the thickness of the lens (the distance along the lens axis between the two surface vertices).
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 4


This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online