Question

the speed of light is 3×10^10 cm/s and the value of Planck's constant is 6.626×10^-34 Js . what is the closest value of frequency of a quantum of light having 100 angstrom wavelength​

Answer 1

Given:-

Planck's constant h=6.63×10 −34 Js

Speed of light c=3×10

17 nms −1

Frequency of quanta ν=6×10 15 s −1

Wavelength, λ=?

We know that h=

λc

Given:-

Planck's constant h=6.63×10

−34

Js

Speed of light c=3×10

17

nms

−1

Frequency of quanta ν=6×10

15

s

−1

Wavelength, λ=?

We know that h=

λ

c

or λ=

ν

c

λ= 6×10 15 s −1 3×10

17 nms −1

λ=50 nm