White light containing wavelengths from 405 nm to 760 nm falls on a grating with 7510 lines/ cm. How wide is the first-order spectrum on a screen 2.29 m away?
Is this correct
sin theta= (1)*(4.05e-7m)/(1.33e-6m)= 0.305 theta=17.8
location= 2x(tan 17.8)= (2*2.29)*0.321=1.47m
sin theta=...
White light containing wavelengths from 405 nm to 760 nm falls on a grating with 7510 lines/ cm. How wide is the first-order spectrum on a screen 2.29 m away?
I'm not sure the way this question is worked out, but what I have so far is
sin(theta)=[m*Lambda+ m*Lambda]/d
d=1/7510cm=1.33e-6m...
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