How Much Energy (In EV)does a Photon of Red Light

question 22

Multiple Choice

How much energy (in eV) does a photon of red light (l = 700 nm) have? (h = 6.63 x 10^-34 J*s,c = 3.00 x 10⁸ m/s,1 eV = 1.60 x 10^-19 J,and 1 nm = 10^-9 m)

• A)3.11 eV
• B)2.26 eV
• C)1.78 eV
• D)1.24 eV

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Definitions:

Intercalated Discs

Intercalated discs are specialized connections between heart muscle cells (cardiomyocytes), facilitating coordinated contraction through electrical and mechanical linkage.

Gap Junctions

Specialized intercellular connections that allow for direct communication between cells through the exchange of ions and small molecules.

Cardiac Muscle

A type of involuntary striated muscle found exclusively in the heart, responsible for heart contractions.

Left Coronary Artery

The artery that supplies blood to the left side of the heart, branching into the circumflex and left anterior descending arteries.