Question

A recipe requires 10 grams of salt. According to Weber’s constant for saltiness, which is 1/5, how much more salt must a chef add to make the recipe noticeably saltier?

Answer 1

Answer:

2 grams of salt must be added by chef  to make the recipe noticeably saltier.

Explanation:

Weber's Law :

$k=\frac{\Delta I}{I}$

Where =

I = Initial stimulus intensity

ΔI = Difference threshold

k = Weber constant

According to Weber’s constant for saltiness , k= $\frac{1}{5}$

Amount of salt required for the recipe , I= 10 g

$\frac{\Delta I}{10 g}=\frac{1}{5}$

$\Delta I = 2 g$

2 grams of salt must be added by chef  to make the recipe noticeably saltier.