Problem on central diffraction peak
If violet light of wavelength 415 nm falls on a single slit, it makes a central diffraction peak which is 9.10 cm broad on a screen which is 2.45 m away.
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A certain metal rod which is around 7.00 m long and 0.45 cm2 in cross-sectional area is found to stretch 0.50 cm beneath a tension of around 16,000 N. Determine the Young's modulus (elastic modulus: E) for this metal?
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