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Solve the following Weber fraction problems. a.If Joshua Oswald is jamming to Blank Space at 62 dB, what is the Weber constant if he noticed

Solve the following Weber fraction problems.

a.If Joshua Oswald is jamming to Blank Space at 62 dB, what is the Weber constant if he noticed a change in intensity 50% of the time at 67 dB?

b. The difference in the brightness of 120 lights is just detectable from the brightness emitted by 125 lights. What is the Weber fraction for brightness?

c.During lightning survey, a luminance meter measured the light leaving a surface as 50 cd/m2 while an illuminance meter measured the light falling on a surface as 75 lux. What is the reflectance of the surface?

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