A flat piece of glass is held stationary and horizontal above the highly polished, flat top end of a 8.50-cm-long vertical metal rod that has its lower end rigidly fixed. The thin film of air between the rod and glass is observed to be bright by reflected light when it is illuminated by light of wavelength 530 nm. As the temperature is slowly increased by 21.5°C, the film changes from bright to dark and back to bright 200 times. What is the coefficient of linear expansion of the metal? °c•1

A flat piece of glass is held stationary and horizontal above the highly polished, flat top end of a 8.50-cm-long vertical metal rod that has its lower end rigidly fixed. The thin film of air between the rod and glass is observed to be bright by reflected light when it is illuminated by light of wavelength 530 nm. As the temperature is slowly increased by 21.5°C, the film changes from bright to dark and back to bright 200 times. What is the coefficient of linear expansion of the metal? °c•1

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.

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A flat piece of glass is held stationary and horizontal above the highly polished, flat top end of a 8.50-cm-long vertical metal
rod that has its lower end rigidly fixed. The thin film of air between the rod and glass is observed to be bright by reflected
light when it is illuminated by light of wavelength 530 nm. As the temperature is slowly increased by 21.5°C, the film
changes from bright to dark and back to bright 200 times. What is the coefficient of linear expansion of the metal?
°c-1

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