Question

Sodium light has alrequency of 5.090 x 10H12 Find the number of waves of sodium light in 5 meters of
plass (V 3 x 10²ms. 15)
​

Answer 1

Answer:

Explanation:

frequency, f=4×10  

14

 Hz

Wavelength, λ=5×10  

−7

m

velocity, v=fλ

=4×10  

14

×5×10  

−7

 

=20×10  

7

 

v=2×10  

8

m/s

Refractive index, μ=  

v

c

​  

 

=  

2×10  

8

 

3×10  ∧8

μ=1.5.