Question

33. The sodium frame test has a characteristic yellow
colour due to the emissions of wavelength 589
nm. What is the mass equivalence of one photon
of this wavelength?​

Answer 1

mass = h/c(lamda) = 2.21*10^-42/wavwlength in meters

$(2.21 \div 589 )\times {10}^{ - 33}$

Answer 2

Answer:

ans. is 3.74×10^(-36)