If acelerating potential applied across the tube is 30 kV. Then wavelength of `K_(alpha)` X-ray is 1 Å. If potential is made 40 kV then, find out the wavelength of `K_(alpha)` from the same tube ?

Explanation

To solve the problem of finding the wavelength of Kα X-ray when the accelerating potential is changed from 30 kV to 40 kV, we can follow these steps:

### Step 1: Understand the relationship between accelerating potential and X-ray wavelength
The wavelength of X-rays is inversely related to the energy of the electrons accelerated through the potential difference. The energy (E) of an electron accelerated through a potential difference (V) is given by:
\[ E = eV \]
where \( e \) is the charge of the electron.

### Step 2: Relate energy to wavelength
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