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Two narrow slits 84 mum apart are illuminated with light of wavelength 650 nm. What is the angle of the m = 3 bright fringe in radians What is the angle in degrees

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Answer:

The angle is 1.33°.

Step-by-step explanation:

Given that,

Distance
d=84*10^(-6)\ m

Wavelength = 650 nm

Number of fringe = 3

We need to calculate the angle

Using formula of angle for brightness


d\sin\theta=m\lambda


\theta=\sin^(-1)(m\lambda)/(d)

Where, d = distance


\lambda =wavelength

m = number of fringe

Put the value into the formula


\theta=\sin^(-1)(3*650*10^(-9))/(84*10^(-6))


\theta=1.33^(\circ)

Hence, The angle is 1.33°.

User Massimo Polimeni
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