Two Flat Planes of Glass Are Laid on Top of One

question 66

Multiple Choice

Two flat planes of glass are laid on top of one another.The upper plane is slightly raised due to the insertion of a thin piece of paper at one end and an air wedge is thus formed.Light of wavelength 500 nm is normally incident on the glass from above and interference fringes are observed by reflection with 2.5 fringes per cm.Calculate the angle of the wedge.

• A)6.3 \(\times\) 10^-5 deg
• B)1.8 \(\times\) 10^-3 deg
• C)4.0 \(\times\) 10^-4 deg
• D)3.6 \(\times\) 10^-3 deg
• E)5.7 \(\times\) 10^-4 deg

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Definitions:

Significance Level

The threshold at which researchers decide whether an effect or result observed in data is statistically significant, commonly set at 0.05 or 5%.

Summary Statistics

Refers to a set of descriptive indices that summarize the central tendency, dispersion, and shape of a dataset distribution, including measures such as mean, median, variance, and standard deviation.

T-Test

A statistical test used to compare the means of two groups to see if they are significantly different from each other.

Sample SD

The standard deviation of a sample, a measure of the dispersion or variability of data points within the sample.