Answer:
Explanation:
For first order maxima , the angle Φ
Φ in radian = 1.5 λ /a
For third order maxima , the angle in radian
= 3.5 λ / a
Hence angle becomes 3.5/1.5 times in radian and therefore also in degree
Hence angle required is 10 x 3.5/1.5 degree or 23.33 degree.
