Medium
In the photoelectric effect:
$A.$ The photocurrent is proportional to the intensity of the incident radiation.
$B.$ The maximum kinetic energy with which photoelectrons are emitted depends on the intensity of incident light.
$C.$ The maximum kinetic energy with which photoelectrons are emitted depends on the frequency of incident light.
$D.$ The emission of photoelectrons requires a minimum threshold intensity of incident radiation.
$E.$ The maximum kinetic energy of the photoelectrons is independent of the frequency of the incident light.
Choose the correct answer from the options given below:
$A.$ The photocurrent is proportional to the intensity of the incident radiation.
$B.$ The maximum kinetic energy with which photoelectrons are emitted depends on the intensity of incident light.
$C.$ The maximum kinetic energy with which photoelectrons are emitted depends on the frequency of incident light.
$D.$ The emission of photoelectrons requires a minimum threshold intensity of incident radiation.
$E.$ The maximum kinetic energy of the photoelectrons is independent of the frequency of the incident light.
Choose the correct answer from the options given below:
- A$A$ and $C$ only
- B$A$ and $E$ only
- C$B$ and $C$ only
- D$A$ and $B$ only
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View SolutionStatement $(I)$ : By increasing the potential difference between cathode and anode continuously in a photoelectric experiment,the photocurrent always increases continuously.
Statement $(II)$ : If two photons $A$ and $B$ of energies $2.5 \ eV$ and $3.5 \ eV$ respectively fall on a metal surface of work function $2.0 \ eV$,then the ratio of maximum kinetic energies emitted between $A$ and $B$ is $3$.
Statement $(III)$ : The maximum energy needed by an electron to come out from metal surface is called the work function of the metal.
Which of the following is correct?
Statement $(II)$ : If two photons $A$ and $B$ of energies $2.5 \ eV$ and $3.5 \ eV$ respectively fall on a metal surface of work function $2.0 \ eV$,then the ratio of maximum kinetic energies emitted between $A$ and $B$ is $3$.
Statement $(III)$ : The maximum energy needed by an electron to come out from metal surface is called the work function of the metal.
Which of the following is correct?
Match the following table.
$List-I$ $List-II$ $A$. Michelson-Morley experiment $I$. The existence of anti-matter $B$. Stern-Gerlach experiment $II$. The existence of de-Broglie matter waves $C$. Davisson-Germer experiment $III$. Electrons have spins $D$. Anderson discovery of positron $IV$. The non-existence of ether
| $List-I$ | $List-II$ |
| $A$. Michelson-Morley experiment | $I$. The existence of anti-matter |
| $B$. Stern-Gerlach experiment | $II$. The existence of de-Broglie matter waves |
| $C$. Davisson-Germer experiment | $III$. Electrons have spins |
| $D$. Anderson discovery of positron | $IV$. The non-existence of ether |
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