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Page 644: Practice Problems

Exercise 4

Step 1

1 of 2

Since white light is compound it contains a continuous range of wavelengths so when it passes through two-slit system different colors will have their points of constructive/destructive interference shifted from each other and this will result in decomposition of white light spectrum.

Result

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Exercise 5

Step 1

1 of 2

The condition for constructive interference says
$$
mlambda=dsintheta
$$
. Putting in the data from the problem this becomes

$$
lambda=dsin35^circ
$$
which yields for the distance between slits

$$
d=frac{lambda}{sin35^circ} =frac{670times10^{-9}text{ m}}{sin35^circ} =1.17times10^{-6}text{ m}.
$$

Result

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