Which of the following is true for a method of measurement of surface finish with surface photographs?

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Mr. Dubey

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📊 Metrology and Measurements

Q. Which of the following is true for a method of measurement of surface finish with surface photographs?

(A) different type of illumination is needed
(B) no effect of type of illumination
(C) same type of illumination is needed
(D) monochromatic light is needed

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✅ Correct Answer: (A) different type of illumination is needed

Explanation: in the method of surface inspection with magnified photographs of the surface are taken with different types of illumination. after this photographs with different illumination are studied and compared.

Explanation by: Mr. Dubey

in the method of surface inspection with magnified photographs of the surface are taken with different types of illumination. after this photographs with different illumination are studied and compared.

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