Question

The energy content of one quantum of light is found to be 6.36x10^-12 ergs. Claculate its wavelength in angstroms.

Answer 1

The energy content of one quantum of light is found to be $6.36 \times 10^{-6} - 12$ ergs. Calculate its wavelength in angstroms.

Answer:

Wavelength is $\lambda$.

$$\lambda = h c / E$$ $$c = 3 \cdot 10^{10} \ \mathrm{sm/s}$$ $$h = 1.054 \cdot 10^{-27} \ \mathrm{ergs/s}$$ $$E = 6.36 \cdot 10^{-12} \ \mathrm{ergs}$$ $$\lambda = 5 \cdot 10^{-6} \ \mathrm{sm} = 5 \cdot 10^{2} \ \mathrm{angstroms}$$