To produce hard X-rays in Coolidge tube, we should increase

To produce X-rays in a Coolidge tube, why is it necessary to accelerate cathode rays ?

If the potential difference applied across a Coolidge tube is increased , then

If the potential difference applied across a Coolidge tube is increased , then

If the potential difference applied across a Coolidge tube is increased , then

During X-ray production from coolidge tube if the current increased, then

Assertion: If applied potential difference in coolidge tube is increased, then difference in coolidge tube.

Assertion: If applied potential difference in coolidge tube is increased, then difference in coolidge tube.

The X-rays produced in a coolidge tube of potential difference 40 V have minimum wavelength of