1. Why are several readings taken for each physical quantity? 2. A single reading taken with a meter stick for the length of a cylinder is 5.5 cm. What is the probable percent error in the reading?

Q: how about 2 , 3 and 4

A: Dear student,  Since all questions are different as per guidelines we can author only one question.…

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A: Given : Wavelength = 495 nm = 495*10-9 m

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A: Unknown quantities in given right angle triangles.

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