The percentage of light that would pass through a sample with an absorbance of 2 would be ________%. (Round off to the nearest integer)
Step 1: Understand the relationship between absorbance and transmittance.
The relationship between absorbance (\(A\)) and transmittance (\(T\)) is given by the equation: \[ A = -\log_{10} T. \] This can be rearranged to solve for \(T\): \[ T = 10^{-A}. \] Step 2: Calculate the transmittance. Given \(A = 2\), substitute into the equation: \[ T = 10^{-2} = 0.01. \] Step 3: Convert transmittance to percentage. The percentage of light passing through the sample is: \[ T_{{percent}} = 0.01 \times 100 = 1%. \] Thus, the percentage of light passing through the sample is \( \boxed{1} \)%.
An object is said to have an n-fold rotational symmetry if the object, rotated by an angle of \( \frac{2\pi}{n} \), is identical to the original.
Which one of the following objects exhibits 4-fold rotational symmetry about an axis perpendicular to the plane of the screen?
A color model is shown in the figure with color codes: Yellow (Y), Magenta (M), Cyan (Cy), Red (R), Blue (Bl), Green (G), and Black (K). Which one of the following options displays the color codes that are consistent with the color model?