Photoelectric effect occurs when ultraviolet rays are incident on a metal plate. It does not occur when which of the following are incident?

  • A
    Infrared rays
  • B
    Soft $X$-rays
  • C
    Gamma rays
  • D
    Hard $X$-rays

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Similar Questions

The figure shows the variation of photocurrent with anode potential for four different radiations. Let $I_a, I_b, I_c$ and $I_d$ be the intensities for the curves $a, b, c$ and $d$ respectively $[f_a, f_b, f_c$ and $f_d$ are frequencies respectively].

Why is photoelectric current proportional to intensity?

The number of photo-electrons emitted per second from a metal surface increases when:

In Lenard's experiment,what is the effect on the photoelectric current when ultraviolet radiation incident on the cathode is stopped?

$A$ point source of light is used in an experiment on the photoelectric effect. Which of the following curves best represents the variation of photocurrent $(i)$ with distance $(d)$ of the source from the emitter?

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