Solveeit Logo

Question

Question: Light of wavelength 5000Å incidents over a slit of width 1 mm. The angular width of central maxima w...

Light of wavelength 5000Å incidents over a slit of width 1 mm. The angular width of central maxima will be –

A

300

B

600

C

900

D

900

Answer

600

Explanation

Solution

For Ist minima;

sin q = λa\frac{\lambda}{a} = 12\frac{1}{2} Þ q = 300

\ Angular width of central maxima = 2 × 30 = 60