Question

the period of a radiation is count to be 200 MS calculate its frequency wave number and wavelength​

Answer 1

Answer:

(i) The frequency of the light wave is

 period1=2.0×10−10s1=5×109/s.

(ii) The wavelength of light wave is

 

νc=5×109/s3×108m/s=6.0×10−2m.

(iii) The wave number of light wave is 

νˉ=λ1=6.0×10−21=16.66/m.

Answer 2

Explanation:

Decimal form of 3/13 is 0.2307692. Decimal expansion is the Terminating and repeating which is about 9th numbers is repeating it