Dawn of Modern Physics MCQs

Correct answer D. Light energy arrives in discrete packets called photons

Correct answer C. frequency

Correct answer C. minimum energy needed to remove an electron from its surface

Correct answer D. The minimum frequency of light that can eject electrons from it

Correct answer B. the frequency of the incident light

Correct answer D. The number of photons arriving per second increases

Correct answer A. It halves

Correct answer C. X-rays

Correct answer B. J s

Correct answer C. Zero