Question

calculate wavelength,frequency and wave number of light whose time period is 2× 10 -10​

Answer 1

Answer:     (a) Calculate the wavelength, frequency, and wavenumber of the n=2→n=1n=2→n=1 transition in He+.He  

+

. (b) Calculate the wavelength, frequency, and wavenumber of the n=5→n=4n=5→n=4 transition in L2+.L  

2+

.

MARK AS BRAINLIEST PLS PLS PLS

Answer 2

I have attached the answer

PLZ MARK AS BRAINLIEST