Essay Color Key

Free Essays
Unrated Essays
Better Essays
Stronger Essays
Powerful Essays
Term Papers
Research Papers





Focal Length Of A Concave Mirror

Rate This Paper:

Length: 327 words (0.9 double-spaced pages)
Rating: Red (FREE)      
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Focal Length Of A Concave Mirror

Aim: To observe the focal length of a concave mirror.

Materials:

· Concave Mirror

· Retort Stand

· 2 Pins in stands

· Candle

· Matches

· Ruler

· Screen

Procedure:

1. An approximate focal length was found using parallel light from a
distant object.

2. The mirror was placed in a stand. Pin (A) was moved in its stand,
in front of the mirror till there was no parallax between the pin and
its inverted image.

3. The distance from the object to the mirror was measured.

4. The object pin was placed between F and C. Then the second pin (B)
was moved about till there was no parallax between (B) and the image
(A). The distances of the image and objects were measured.

5. Step 4 was repeated for another position of (A).

6. The image of a light source was located using a screen. Then the
image and object distances were measured.

7. Step 6 was repeated twice.

8. The corresponding values of u and v were tabulated.

Results:

U

V

0.50 m

2.00 m

0.55 m

1.40 m

0.60 m

1.25 m

0.65 m

1.00 m

0.70 m

0.95 m

0.75 m

0.57 m

Data Analysis:

· The tabulated results of step 8 illustrated the image distance,
[IMAGE] and the object distance [IMAGE].

Graphical method

· The two variables, [IMAGE] and [IMAGE] were substituted into the
linear equation y = mx + c to form [IMAGE]= - [IMAGE] + [IMAGE].

· The data was plotted on the graph [IMAGE] versus [IMAGE], thus
proving the relationship between the variables and the linear
equation.

See Figure 1.1

Algebraic method

I. The mirror formula [IMAGE]=[IMAGE]+[IMAGE] was used to calculate f,
the focal length of the mirror for each of the results.

II. The average of the consistent results was then calculated.

See Figure 1.2

Conclusion:

The experiment enabled the physicist to locate the focal point of a
concave mirror. Through the use of obtained results, the graph [IMAGE]
versus [IMAGE] was formulated, proving that a linear relationship
exists between the two variables. However the concave mirrors used in
the experiment were too small in depth, which inhibited accurate
measurements due to human error. Consequently the experiment was an
overall success, the minor errors contained in the data did not affect
the outcome of the experiment, which succeeded to locate the focal
point of the mirror.



How to Cite this Page

MLA Citation:
"Focal Length Of A Concave Mirror." 123HelpMe.com. 21 Sep 2014
    <http://www.123HelpMe.com/view.asp?id=120306>.




Related Searches





Important Note: If you'd like to save a copy of the paper on your computer, you can COPY and PASTE it into your word processor. Please, follow these steps to do that in Windows:

1. Select the text of the paper with the mouse and press Ctrl+C.
2. Open your word processor and press Ctrl+V.

Company's Liability

123HelpMe.com (the "Web Site") is produced by the "Company". The contents of this Web Site, such as text, graphics, images, audio, video and all other material ("Material"), are protected by copyright under both United States and foreign laws. The Company makes no representations about the accuracy, reliability, completeness, or timeliness of the Material or about the results to be obtained from using the Material. You expressly agree that any use of the Material is entirely at your own risk. Most of the Material on the Web Site is provided and maintained by third parties. This third party Material may not be screened by the Company prior to its inclusion on the Web Site. You expressly agree that the Company is not liable or responsible for any defamatory, offensive, or illegal conduct of other subscribers or third parties.

The Materials are provided on an as-is basis without warranty express or implied. The Company and its suppliers and affiliates disclaim all warranties, including the warranty of non-infringement of proprietary or third party rights, and the warranty of fitness for a particular purpose. The Company and its suppliers make no warranties as to the accuracy, reliability, completeness, or timeliness of the material, services, text, graphics and links.

For a complete statement of the Terms of Service, please see our website. By obtaining these materials you agree to abide by the terms herein, by our Terms of Service as posted on the website and any and all alterations, revisions and amendments thereto.



Return to 123HelpMe.com

Copyright © 2000-2013 123HelpMe.com. All rights reserved. Terms of Service