(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Two narrow slits are 0.12 mm apart. Light of wavelength 550 nm illuminates the slits, causing an interference pattern on a screen 1.0 m away. Light from each slit travels to the m=1 maximum on the right side of the central maximum.

Part A -

How much farther did the light from the left slit travel than the light from the right slit?

Express your answer using two significant figures.

2. Relevant equations

r=dsin(theta)

(theta)_{m}= m*(lambda/d)

y=L*tan(theta)

y_{m}= (m*lambda*L)/d

3. The attempt at a solution

I don't understand how to do these problems...

theta_{m}= (m*lambda*)/d

theta_{m}= (1*(5.5*10^-7m)/(1m)

theta_{m}= 5.5*10^-7

path length difference = dsin(theta)

so...

r = d*sin(theta)

r = 1m *sin(5.5*10^-7)

r = 9.599^-9m

r = 9.6nm

That doesn't appear to be the correct answer(Unless MasteringPhysics is wrong). Sadly, I don't know if I did the right steps or used the correct equations.

Any help is appreciated.

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Light-path length difference

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