Question

determine the element number if the cutoff frequency of the K-lines of characteristic X-rays radiation is 555.10^18 Hz​

Answer 1

Explanation:

We know that,

V

=a(z−b)

now,

λ

1

=

c

V

=

3×10

8

4.2×10

18

Z=R(Z−1)

2

[

n

1

2

1

mi

−

n

2

2

1

]

Z=1.1×10

7

(Z−1)

2

[

1

2

1

−

2

2

1

]

Z=42