Physics II Lab w answers_Part_63

Physics II Lab w answers_Part_63 - II. Setup and Procedure:...

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137 II. Setup and Procedure: 1. Switch on the laser source about 15 minutes before the experiment is due to start. This ensures that the intensity of light from the laser source is constant. 2. Allow the laser beam to fall on a slit formed in the screen provided. 3. The intensity distribution in the diffraction pattern is measured with the help of a photo cell. The photo cell is secured to a mount and is kept as far behind the slit as possible. A screen with a slit (0.3mm wide) is fitted in front of the photocell. The photo current is measured with a multimeter( A) range and is approximately proportional to intensity of the incident light. 4. Repeat the same procedure for double slit and record the diffraction pattern on both the sides of central maximum. The interval between two consecutive minima positions of the photocell should be small enough, so that adjacent maxima/minima of the intensity distribution are missed. Precautions:
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This note was uploaded on 11/26/2011 for the course PHY 2053 taught by Professor Lind during the Fall '09 term at FSU.

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Physics II Lab w answers_Part_63 - II. Setup and Procedure:...

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