The frequency of X -rays, , Gamma rays and visible light wave rays are a, b and c respectively , then

Options

A. `a lt b, b lt c`
B. `a lt b, b lt c`
C. `a gt b gt c`
D. `a gt b, b lt c`

Answer

A

Explanation

The frequency of X-rays
`a=3xx10^(19)` to `1xx10^(16)`
The frequency of Gamma-rays
`b=3xx10^(22) "to" 3xx10^(18)`
The frequency of visible light
`c=8xx10^(14) "to" 4xx10^(14)`
so `b gt a, b gt c`