Grade 12th passGeneral Physics
what is the formula for the dispersive power of grating and on what factors does it depend
1 Answer
Vikas TU
(a+b)sinthetha = nk
where k is the wavelength.
Differentiatng the above equation w.r.t. thetha,
we get
(a+b)costhetha dthetha = nk
Here dthetha/dk is the dispersive power.
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