Question 320: Wave Optics

Question

The path difference between two identical light waves at a point $$Q$$ on the screen is $$3 \mu \mathrm{m}$$. If wavelength of the waves is $$5000 \mathop A\limits^o$$, then at point $$Q$$ there is

Accepted Answer

Given, path difference $$(\Delta x)=3 \mu \mathrm{m}=3 	imes 10^{-6} \mathrm{~m}$$
Wavelength of length, $$\lambda=5000 \mathop A\limits^o=5 	imes 10^{-7} \mathrm{~m}$$
angular position is given by
$$	heta=\frac{\Delta x}{\lambda}=\frac{3 	imes 10^{-6}}{5 	imes 10^{-7}}=6$$
Since, $$n=$$ integer (6) is even, therefore, we will have 6th order maxima.

Answer

3rd dark band

Answer

4th bright band

Answer

5th dark band

Answer

6 th bright band

Wave Optics

The path difference between two identical light waves at a point $Q on the screen is 3 \mu \mathrm{m}. If wavelength of the waves is 5000 \mathop A\limits^o, then at point Q$ there is

Choose the correct answer: