Japanese physicist Hideki Yukawa determined the mass of mesons, which he surmise

Question

Japanese physicist Hideki Yukawa determined the mass of mesons, which he surmised as between an electron and proton, by relating range of nuclear force to the mass of the exchange particle that gives rise to the force. For example, he determined that since the range of electromagnetic force is infinite (1/R^2), photons are massless. Similarly, the range of a strong force in the nucleus is the size of the nucleus, 10^-15 m, so the mass of the meson would be 100 MeV/C^2.

Yukawa’s prediction of the mass of mesons was based on:

A. The relationship between the strength of a force and the mass of the exchanged particle that gives rise to the force.

B. The relationship between the distance over which a force is exerted and the mass of the exchanged particle that gives rise to the force.

C. The relationship between the type of particles that exert a force and the mass of the exchanged particle that gives rise to the force.

Explanation / Answer

in the passage it is mentioned that mass of mesons was measured by relating the range of the nuclear force to the mass of the exchange particle that give rises to the force.

range of force is defined as the region over which the effect of force is found. for example electromagnetic force effect can be found over a very large distance, whereas the presence of strong force can be found only within the radius of a nucleus(10-15m)

hence the correct option is B

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