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Fundamentals Of Physics
Found in: Page 1080

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Short Answer

In a phasor diagram for any point on the viewing screen for the two slit experiment in Fig 35-10, the resultant wave phasor rotates60.0° in 2.50×10-16s . What is the wavelength?

Thus, the wavelength of light is 450nm.

See the step by step solution

Step by Step Solution

Step 1: According to the question.

It is given that

Δϕ=60°=π3 rad

The figure according to the question is:

The phasors rotate with constant angular velocity


Step 2: The wavelength of light in medium. 

Since, light waves travelling in a medium (air) where the wave speed is approximately c, then kc=ω,where k=2πλ, which leads to


Hence, the wavelength of light is, 450nm.

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