Problem: You illuminate two very narrow slits in air by monochromatic coherent light and find that the first interference maximum on either side of the central bright spot is at an angle of ±12.0° from the center of the central bright spot. You then immerse the entire apparatus in a transparent liquid and find that the first maximum on either side of the central bright spot occurs instead at ±9.0°. What is the index of refraction of the liquid? (a) 0.5 (b) 1.3 (c) 1.5 (d) 2.0 (e) 3.0 (f) 4.0 (g) none of the above

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Problem Details

You illuminate two very narrow slits in air by monochromatic coherent light and find that the first interference maximum on either side of the central bright spot is at an angle of ±12.0° from the center of the central bright spot. You then immerse the entire apparatus in a transparent liquid and find that the first maximum on either side of the central bright spot occurs instead at ±9.0°. What is the index of refraction of the liquid?

(a) 0.5

(b) 1.3

(c) 1.5

(d) 2.0

(e) 3.0

(f) 4.0

(g) none of the above

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Young's Double Slit Experiment concept. You can view video lessons to learn Young's Double Slit Experiment. Or if you need more Young's Double Slit Experiment practice, you can also practice Young's Double Slit Experiment practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Cetina's class at MONTGOMERY COLLEGE.