Question about light intensity and resistance

[jimbobjb]

Homework Statement

For my physics coursework, I have to design a laboratory experiment using an LDR to investigate how intensity of light emitted from a lamp varies with wavelength. In the procedure I will use diffraction gratings to separate light into wavelengths. The problem I am having is "How a measure of light intensity can be obtained from the LDR" please can anybody show me how to obtain intensity from an LDR.
thanks

Homework Equations

The Attempt at a Solution

 

[Gokul43201]

Do you know how a typical LDR works? Do you have the spec sheet for the LDR you are using (something like this) ?