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In photoelectric effect,...

In photoelectric effect,

A

the emission of electron is the result of elastic collision between the incident photon and the electron.

B

absorption of photon is a gradual process.

C

the emission of electron is a result of inelastic collision between the photon and the electron.

D

at the threshold frequency, the kinetic energy of ejected electrons is maximum.

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • In a photoelectric effect, electrons are emitted

    A
    with a maximum velocity proportional to the frequency of the incident radiation
    B
    at a rate that is independent of the intensity of the incident radiation
    C
    only if the frequency of the incident radiation is above a certain threshold value
    D
    only if the temperature of the emitter is high

  • By photoelectric effect, Einstein, proved

    A
    `E=hv`
    B
    `K.E. = (1)/(2) mv^(2)`
    C
    `E=mc^(2)`
    D
    `E=(Rhc^(2))/(n^(2))`

  • The work function for photoelectric effect

    A
    depends upon the frequency of incident light
    B
    is same for all metals
    C
    is different for different metals
    D
    none of these

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