If the threshold frequency of a metal for photoelectric effect is v0, then which of the following will not happen?

Question

If the threshold frequency of a metal for photoelectric effect is v0, then which of the following will not happen? (A) If frequency of the incident radiation is v0, then kinetic energy of the electrons ejected is zero (B) If frequency of incident radiation is v, the kinetic energy of the electrons ejected will be h v-h v0 (C) If frequency is kept same at v, but intensity is increased, the number of electrons ejected will increase (D) If frequency of incident radiation is further increased, the number of photoelectrons ejected will increase

Tardigrade Admin · Accepted Answer

Increase of intensity (and not frequency) increases the no. of photoelectrons ejected.

Q. If the threshold frequency of a metal for photoelectric effect is $v_{0}$ , then which of the following will not happen?

If frequency of the incident radiation is $v_{0},$ then kinetic energy of the electrons ejected is zero

If frequency of incident radiation is $v,$ the kinetic energy of the electrons ejected will be $h v - h v_{0}$

If frequency is kept same at $v$ , but intensity is increased, the number of electrons ejected will increase

If frequency of incident radiation is further increased, the number of photoelectrons ejected will increase

Increase of intensity (and not frequency) increases the no. of photoelectrons ejected.

Q. If the threshold frequency of a metal for photoelectric effect is v0​, then which of the following will not happen?

If frequency of the incident radiation is v0​, then kinetic energy of the electrons ejected is zero

If frequency of incident radiation is v, the kinetic energy of the electrons ejected will be hv−hv0​

If frequency is kept same at v, but intensity is increased, the number of electrons ejected will increase

If frequency of incident radiation is further increased, the number of photoelectrons ejected will increase

Increase of intensity (and not frequency) increases the no. of photoelectrons ejected.

Q. If the threshold frequency of a metal for photoelectric effect is $v_{0}$ , then which of the following will not happen?

If frequency of the incident radiation is $v_{0},$ then kinetic energy of the electrons ejected is zero

If frequency of incident radiation is $v,$ the kinetic energy of the electrons ejected will be $h v - h v_{0}$

If frequency is kept same at $v$ , but intensity is increased, the number of electrons ejected will increase