Because incident electrons exceed K-shell binding, both Bremsstrahlung (continuous) and characteristic tungsten lines will appear; answer key lists D.

Hadrons (which feel the strong, electromagnetic, weak and gravitational interactions) interact via all fundamental forces, unlike leptons which do not feel the strong force.

The book lists the binding energy for heavy fissionable nuclides around 240 as 5.6 MeV/nucleon, so A is correct.

Using λ = h/(mv) → v = h/(mλ) ≈ 6.63×10^-34/(9.11×10^-31×1×10^-10) ≈ 7.25×10^6 m/s, so option A matches.

Strain is a measure of deformation (change in dimension relative to original), so it is defined in terms of deformation.

The adjacent line separations are 332.5 − 330.2 = 2.3 mT and 334.8 − 332.5 = 2.3 mT, so the hyperfine coupling constant equals 2.3 mT.

The decay constant λ equals activity A divided by the number of undecayed nuclei N (λ = A/N).

A meson is composed of a quark and an antiquark, whereas baryons are three-quark states.

Maximum K.E. depends on frequency via Kmax = hν − φ; intensity affects current, not K.E.

Natural uranium is composed mostly of U-238 (about 99%), so option C is correct.