Monochromatic light shines on the cathode in a photoelectric effect experiment, causing the emission of electrons. If the freque
ncy of the light stays the same but the intensity of the light shining on the cathode is increased:_________ a. The emitted electrons will be moving at a higher speed.
b. There will be more electrons emitted.
c. Neither A nor B are true.
d. Both A and B are true
In photoelectric emission, the energy of the emitted electron is dependent on the frequency of the wave incident on the plate; but not the intensity. The rate of electron emission per unit time however depends on the intensity of the incident light. So increasing the intensity of the light at constant frequency will only affect the number of electrons emitted per unit time.
The speed is the distance traveled divided by the time taken. The distance traveled in 24hs while standing on the equator is the circumference of the Earth , where is the radius of the Earth.
We have then:
And then we use the centripetal acceleration formula:
