Answer:
48.6 ⁰
Explanation:
Data:
Conditions for the first minimum are as follows:
a sinΘ = λ ...(1)
where a = 0.12 m
λ = 0.09 m
From condition (1) sin Θ = λ/a
= 0.09/0.12
Θ = sin ⁻¹ (0.09/0.12)
= 48.6⁰ Ans
7.6m questions
10.2m answers