In Young’s double-slit experiment, using sodium light λ = 5898 Ȧ, 85 fringes are seen. If another colour (λ = 5461 Ȧ) is used then find the number of fringes.
1
62
2
91
3
99
4
85
In Young’s double-slit experiment, using sodium light λ = 5898 Ȧ, 85 fringes are seen. If another colour (λ = 5461 Ȧ) is used then find the number of fringes.