-->

Wave Optics

Question

The light of wavelength 600 nm is incident normally on a slit of width 3 mm. Calculate the linear width of central maximum on a screen kept 3 m away from the slit.

Solution

Given,
Wavelength of light, $λ$ = 600 nm = 600 $\times$ 10^-9 m
Slit width, d = 3 mm = 3 $\times$ 10^-3m
Distance of the screen from the slit, D = 3 m

Now,
Linear width of central maximum = $\frac{2 Dλ}{d}$
= $\frac{2 \times 3 \times 600 \times 10^{- 9}}{3 \times 10^{- 3}}$
= 1.2 mm

For Daily Free Study Material Join wiredfaculty

Wave Optics

The light of wavelength 600 nm is incident normally on a slit of width 3 mm. Calculate the linear width of central maximum on a screen kept 3 m away from the slit.

Some More Questions From Wave Optics Chapter

Is the speed of light in glass independent of the colour of light? If not, which of the two colours red and violet travels slower in a glass prism?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Phone Number

Email Address

Loaction