Minimum wavelength of X-rays produced in a coolidge tube operated at potential difference of 40 kV is

Question

Minimum wavelength of X-rays produced in a coolidge tube operated at potential difference of 40 kV is (A)  0.31 mathringA (B)  3.1 mathringA  (C)  31 mathringA  (D)  311 mathringA

Tardigrade Admin · Accepted Answer

For continuous X-rays, minimum wavelength produced, λ min =(h c/e V) =(12375/( text Energy in eV )) mathringA =(12375/40 × 103) mathringA=0.31 mathringA

Q. Minimum wavelength of X-rays produced in a coolidge tube operated at potential difference of $40 kV$ is

$0.31 \overset{˚}{A}$

$3.1 \overset{˚}{A}$

$31 \overset{˚}{A}$

$311 \overset{˚}{A}$

For continuous X-rays, minimum wavelength produced,
$λ_{m i n} = \frac{h c}{e V}$
$= \frac{12375}{( Energy in e V )} \overset{˚}{A}$
$= \frac{12375}{40 \times 1 0 ^{3}} \overset{˚}{A} = 0.31 \overset{˚}{A}$

Q. Minimum wavelength of X-rays produced in a coolidge tube operated at potential difference of 40kV is

0.31A˚

3.1A˚

31A˚

311A˚