Question

Calculate the wavelength λ1 for gamma rays of frequency f1 = 7.50×1021 hz .

Answer 1

Explanation :

Frequency of gamma rays,
`\\u=7.5* 10^(21)\ Hz`

The relation between the frequency and the wavelength is given by :

`\lambda=(c)/(\\u)`

So,
`\lambda=(3* 10^8\ m/s)/(7.5* 10^(21)\ Hz)`

`\lambda=4* 10^(-14)\ m`

Hence, this is the wavelength of gamma rays.

Answer 2

Gamma rays are in class of electromagnetic waves and therefore has the same speed equal to that of light, that is, 3x10^ m/s

Wavelength = speed/frequency = (3x10^8)/(7.50x10^21) = 4x10^-14 m