Statement (I): A plot of √ν (ν = frequency of X-rays emitted) vs atomic mass is a straight line.

Statement (II): A plot of ν (ν = frequency of X-rays emitted) vs atomic number is a straight line.

In the light of the above statements, choose the correct answer from the options given below:

According to Moseley’s law:
√ν = a (Z − b)
where Z = atomic number

Statement I relates √ν with atomic mass.
Moseley’s law depends on atomic number, not atomic mass.
✘ Statement I is false.

Statement II claims ν vs atomic number is a straight line.
From Moseley’s law, √ν (not ν) is linearly related to Z.
Hence ν vs Z is not linear.
✘ Statement II is false.

Correct Answer = Both Statement I and Statement II are false