Question

frequency of radiation having a wavelength of 1000 amstrong is

Answer 1

c=va where c is speed of light =3×10^8 m/s , v is the frequency and a is the wavelength =100 angstrom =100×10^-10 m =10^-8 m . => 3×10^8 = v(10^-8) =>
v =3×10^8/10^-8 =3×10^16 hertz(Hz) . Hope it helps you...Mark me as Brainliest if you think i am worthy of it.

Answer 2

Given, wavelength $\lambda = 1000 \AA= 10^{-7} \AA$

We know frequency $\nu = \frac{c}{\lambda}$ where c = speed of light = $3 \times 10^{8} m/s$

$\therefore \nu = \frac{3\times 10^{8}}{10^{-7}}= 3\times 10^{15} Hz$

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