Diffraction Grating (Leaving Cert Physics): Quizzes

Device splitting light into wavelengths

Several hundred lines per millimetre

Distance between adjacent slit centres

$2.5 \times 10^{-6}$ m

Create greater diffraction angles

$n = 0$

$n\lambda = d \sin \theta$

$\sin \theta$ cannot exceed 1

5

Symmetrically at equal angles both sides

Produce sharp lines & precise angles

$6.30 \times 10^{-7}$ m