- #1

poohead

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## Homework Statement

Blue light of wavelength 470nm is diffracted by a grating ruled 5000 lines/cm.

a) compute the angular deviation of the second-order image

b) what is the highest order-image theoretically possible with this wavelength and grating

## Homework Equations

stumped

Ephoton = hc/lambda

Ee= hf

Lambda = h/mv

## The Attempt at a Solution

i figured i could have used a waves, sound & light formula like

lambda = dsin@/n

but there arent any nodes,

stumped, sorry

help is very much appreciated considering this question is really pissing me off