Q 61

Expert-verifiedFound in: Page 993

Book edition
4th

Author(s)
Randall D. Knight

Pages
1240 pages

ISBN
9780133942651

To determine the focal length of a lens, you place the lens in front of a small lightbulb and then adjust a viewing screen to get a sharply focused image. Varying the lens position produces the following data:

Use the best-fit line of an appropriate graph to determine the focal length of the lens.

Focal length is equal to 15 cm.

We need to determine the focal length of the lens using the best fit line of an appropriate graph.

Now, Finding and from given data :

Plotting the Graph :

y-intercept indicates the reciprocal of f.

Therefore,

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