A Level Physics Practice Exam 2025 – The All-in-One Guide to Mastering Your Physics Exam!

Question: 1 / 400

Which of the following statements distinguishes the exchange particles for weak interaction and electromagnetic force?

Photon has mass

Photon is charged

Photon has infinite range

The correct answer highlights a fundamental property of the photon, the exchange particle for the electromagnetic force, which indeed has an infinite range. This characteristic arises from the fact that the photon is massless. In contrast, the W and Z bosons, which mediate the weak interaction, possess mass, leading to a very short range for this force, considerably less than that of electromagnetic interactions.

The other statements involve attributes that do not align with the properties of the exchange particles. The photon does not have mass or charge, and the W bosons, although responsible for the weak force, do not have infinite range due to their mass. Understanding these properties is essential for distinguishing between the two fundamental forces in physics.

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W boson has infinite range

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