Which physical quantity will change if intensity of light falling on metal's surface is increased?
Correct answer: D. Current
- A. K.E of photo electrons
- B. Plate potential
- C. Velocity of photo electron
- D. Current
Explanation
By increasing intensity of light, numbers of emitted electrons are increased. Hence current will be increased.
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About Photons and the Particle Model of Light
The particle model treats light as photons with energy E equals hf and momentum related to wavelength. Questions involve the photoelectric effect, work function, threshold frequency, stopping potential and photon energy, while distinguishing particle behaviour from the wave description of interference and diffraction.
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