The minimum wavelength of X-rays produced by electrons accelerated through a potential difference V varies with V in what way?
Options

Question

The minimum wavelength of X-rays produced by electrons accelerated through a potential difference V varies with V in what way?

G1 Physics · Accepted Answer

Step 1: An electron accelerated through voltage V gains kinetic energy eV. Step 2: The maximum X-ray photon energy is hνₘₐₓ = hc/λₘᵢₙ = eV. Step 3: Hence λₘᵢₙ = hc/(eV), so λₘᵢₙ ∝ 1/V. Final D. Final answer: (D) 1/V.