Monochromatic Laser Light of Frequency 5

question 19

Short Answer

Monochromatic laser light of frequency 5.20 × 10¹⁴ Hz is shown on a pair of thin parallel slits, and the pattern is viewed on a screen 1.20 m away. The fifth bright fringes (not counting the central fringe) occur at ±2.12 cm on either side of the central bright fringe. The entire apparatus is now immersed in a transparent liquid. When the experiment is repeated, the fifth bright fringes now occur at ±1.43 cm from the central bright fringe. (c = 3.00 × 10⁸ m/s)
(a) How far apart are the slits?
(b) What is the index of refraction of the liquid?

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Definitions:

Population Variance

A measure of the spread or dispersion of a set of data values in a population, indicating the average squared deviation from the mean.

Rejection Region

The rejection region is the range of values in hypothesis testing for which the null hypothesis is rejected in favor of the alternative hypothesis.

Population Mean

The average value of a characteristic or measurement across the entire population targeted in a study.

Population Standard Deviation

A measure of the dispersion or spread of a set of data points in a population, quantifying how much the data diverges from the mean of the population.