Awatt is a unit of energy per unit time, and one watt (w) is equal to one joule per second ( j⋅s−1) . an 80.0 w incandescent lightbulb produces about 8.00% of its energy as visible light. assuming that the light has an average wavelength of 510.0 nm, calculate how many such photons are emitted per second by an 80.0 w incandescent lightbulb.

1.64 x 10⁻¹⁹ per sec

Explanation:

P = Power of the bulb = 80 W

t = time

λ = wavelength of the light = 510 nm = 510 x 10⁻⁹ m

c = speed of light = 3 x 10⁸ m/s

n = number of photons

E = energy produced by the bulb as light

Energy produced by the bulb as light is given as

E = (0.08) Pt

= 1.64 x 10⁻¹⁹ per sec

wavelength variability is the right one