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Verified answer
GELOMBANG CAHAYA• difraksi
λ = 600 nm = 6×10^-7 m
m = 2
θ = 37° → sin θ = 0,6
N = __?
d sin θ = m λ
d = m λ / sin θ
d = 2 • 6×10^-7 / 0,6
d = 2×10^-6 m = 2×10^-4 cm
N = 1 / d
N = 1 / 2×10^-4
N = 10⁴ / 2
N = 5000 celah/cm ← jwb
Verified answer
Dik :λ=600 nm = 6.10⁻⁷ m
Ф=37°
Dit :
N=...?
Peny :
d sinФ = k λ
d sin 37°=2.6.10⁻⁷
d.0,6=12.10⁻⁷
d=2.10⁻⁶ m
d=2.10⁻⁴ cm
d=1/N
2.10⁻⁴ = 1/N
N=10000/2
N=5000 garis/cm
∴ Jumlah garis tiap cm adalah 5000 garis/cm
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