Monochromatic light of wavelength 580 nm is incident on a slit of width 0.30 mm. The screen is 2 m from the slit. The width of the central maximum is

Question

Monochromatic light of wavelength 580 nm is incident on a slit of width 0.30 mm. The screen is 2 m from the slit. The width of the central maximum is (A) 3.35 × 10-3 m (B) 2.25 × 10-3 m (C) 6.20 × 10-3 m (D) 7.7 × 10-3 m

Tardigrade Admin · Accepted Answer

W=(2 D λ/a) D=2 m , a =0.3 × 10-3 m λ=580 × 10-9 m

Q. Monochromatic light of wavelength $580 nm$ is incident on a slit of width $0.30 mm$ . The screen is $2 m$ from the slit. The width of the central maximum is

$3.35 \times 1 0^{- 3} m$

$2.25 \times 1 0^{- 3} m$

$6.20 \times 1 0^{- 3} m$

$7.7 \times 1 0^{- 3} m$

$W = \frac{2 D λ}{a}$
$D = 2 m,$
$a = 0.3 \times 1 0^{- 3} m$
$λ = 580 \times 1 0^{- 9} m$

Q. Monochromatic light of wavelength 580nm is incident on a slit of width 0.30mm. The screen is 2m from the slit. The width of the central maximum is

3.35×10−3m

2.25×10−3m

6.20×10−3m

7.7×10−3m