Question

A photo cell emits electrons when yellow light falls on it. Which of the following statements is correct if a light of frequency that is two times yellow light falls on it?


Velocity of the emitted electrons decreases.

Velocity of the emitted electrons increases.

Number of the emitted electrons increases.

Number of emitted electrons decreases.

Answer 1

@dan815

Answer 2

the speed of the electron depends on the frequency or energy applied to the electron to displace it form the metal. when the light remains blue, the frequency of the light is the same, but when there are 2 sources there is more light so more electrons can be hit, but they will always eject at the same energy level

Answer 3

Number of the emitted electrons increases.
??

Answer 4

read carefully

Answer 5

Number of emitted electrons decreases.

Answer 6

you have more electrons ejected where there is more photos hitting electrons that means there is more light, but the energy each electron receives from the photon depends on the frequency of the photon

Answer 7

.

Answer 8

that energy the electron has translates into kinetic energy 1/2 mv^2 and you see the velocity increase there

Answer 9

so is this correct? Number of emitted electrons decreases.

Answer 10

no

Answer 11

the velocity of the electrons increase

Answer 12

Which of the following summarizes Rutherford's model of the atom?


Electrons are embedded in a positive region of spherical dimension.

Electrons revolve around the nucleus without emitting radiation.

Electrons revolve around the nucleus like planets move around the sun.

Atoms emit radiation only when electrons jump from a higher energy state to a lower energy state.