How Can You Measure Light Intensity Variation with Wavelength Using an LDR?

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Homework Help Overview

The discussion revolves around designing a lab experiment to investigate how the intensity of light emitted by a lamp varies with wavelength, specifically using a Light Dependent Resistor (LDR) as a measurement tool.

Discussion Character

  • Exploratory, Conceptual clarification, Problem interpretation

Approaches and Questions Raised

  • Participants discuss how to select different wavelengths from a lamp and how to measure intensity using the LDR. There is mention of using a polaroid disc as a potential method for measuring wavelength.

Discussion Status

The discussion is in an exploratory phase, with participants questioning the setup and suggesting various methods for conducting the experiment. Some guidance has been offered regarding the need for initial attempts at problem-solving.

Contextual Notes

Participants are encouraged to consider factors that need to be controlled for a fair test, as well as safety precautions and features that ensure accuracy and reliability in their experimental design.

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Homework Statement


Design a lab experiment using a LDR to investigate how the intensity of light emmited by a lamp varies with wavelength



Homework Equations



how the wavelength of the light falling in the LDR is determined
how a measure of the intensity can be obtained from the LDR
factors to be controlled to ensure it's a fair test, safety precautions and particular features to ensure accuracy and reliability

The Attempt at a Solution

 
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Welcome to the forums! You must make some attempt at the problem yourself before we can help you. What ideas do you have about the experiment? For example how can you select different wavelengths from a lamp and what is it about the LDR that could be used to measure intensity?
 
i could use a polaroid disc to measure the wavelength
 

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